24 Hour Urine Preservative List
68 items.
| Test Directory 24 Hour Urine Preservative List 68 items. |
| Test name | Order code | Test code (flexilab) | Collection Procedure | Specimen Processing | Alternate Specimens |
| VANILLYLMANDELIC ACID & HOMOVANILLIC ACID URINE (QUANTITATIVE) | HVVMUQ | HVVMUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Must refrigerate during collection. | Aliquot 5 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Store and transport refrigerated. | Samples that have been adjusted to pH 2-3 with 6M HCl. Also random urine specimens. |
| 17-HYDROXYCORTICOSTEROIDS | 17OHQ | 17OHQ | Refrigerate during collection. | Aliquot 12 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container and freeze. Record total volume. Store and transport frozen. | Random samples (but they are reported as mg/L with no reference ranges), samples refrigerated with preservatives. Sample pH must be 5-7. Mix well, add 1 gram boric acid/100 mL urine, adjust pH (with boric acid) to 5-7 and freeze. |
| 17-KETOSTEROIDS, URINE | KETO | 17KSUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 4 mL of a well-mixed 24-hour urine collection into a leakproof plastic container. Record total volume and collection interval on transport tube and request form. Store and transport refrigerated. | 24 hour urine preserved with 6N HCl to a pH of 2-4. A pH of LT 2 will decrease analyte stability. |
| 17-KETOSTEROIDS, URINE (FRACTIONATED) | 17-KETO FRAC | 17FRUQ | Add 25 mL of 50% acetic acid to a 24-hour dark plastic urine container. Collect a 24-hour urine specimen. Use 15 mL 50% acetic acid for children less than 5 years old. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 2-4. Store and transport refrigerated. Record total volume. | |
| 3-METHOXY-4-HYDROXYPHENYLGLYCOL (MHPG), URINE | MHPGUQ | MHPGUQ | Collect a 24-hour urine specimen in a 24-hour urine container (preferable polyethylene), no preservative. Refrigerate during collection. | Aliquot 5 mL of a well-mixed 24-hour urine collection into a leakproof plastic container. Record collection time and total volume. Store and transport refrigerated. | |
| 5-HIAA, URINE (QUANTITATIVE) | 5-HIAA | HIAAUQ | Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 25 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Upon receipt adjust pH to 1-4 with 6N HCl. Record collection time and total volume. Store and transport refrigerated. | 24-hour urine collected with 10 grams of boric acid, 25 mL of 50% acetic acid and then pH to 1-4 with 6N HCl. |
| ALDOSTERONE, URINE | ALDOSTERONE-U | ALDUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 4.5 mL of a well-mixed 24 hour urine collection into a leakproof plastic container and freeze. Record total volume. Store and transport frozen. | Refrigerated urine samples that are preserved with 1 gram boric acid per 100 mL urine and specimens preserved with 6N HCl or acetic acid to pH 3.0-4.5. |
| ALUMINUM, URINE | ALU-U | ALUUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container or a random urine collection. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection or random urine collection into a leakproof plastic urine container. Store and transport refrigerated. ARUP studies indicate that refrigeration of urine alone, during & after collectio preserves specimens adequately if tested within 14 days of collection. Record total volume and collection time. Submit specimen in two ARUP Trace Element-Free Transport Tubes (43116). | |
| AMINO ACIDS, URINE (QUANTITATIVE) | AAU.QUANT | AAURQ | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Record total volume. Store and transport refrigerated. | |
| AMINOLEVULINIC ACID, URINE | ALA-U | ALAUQ | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Protect from light during collection, storage and transport. Store and transport refrigerated or frozen. | |
| AMYLASE, URINE (QUANTITATIVE) | AMYUQ | AMYUQ | Collect a 24-hour in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour collection into a leakproof plastic urine container. Record total volume and collection period. | Specimens that have been frozen. |
| ANDROSTERONE, URINE | ANDR-U | ANDRUQ | Add 25 mL of 50% acetic acid to a 24-hour dark plastic urine container. Use 15 mL 50% acetic acid for children less than 5 years old. Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 2-4. Store and transport refrigerated. Record total volume. | |
| ARSENIC, URINE (QUANTITATIVE) | ARS-U | ARSUQ | Add 20mL 6N nitric acid to a 24-hour dark plastic urine container at the start of collection. Collect a 24-hour urine specimen. Use only SAGE, GUARD, P-Splitter or HEDWIN jugs. Pretest other jugs. Do not use VOLLRATH jugs. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic container. Record collection time and total volume. Adjust pH to 2. Store and transport refrigerated. | May add 20 mL 6N HNO3 at end of collection. Adjust pH to 2. This procedure may be done after the specimen has been received at PAML, however, it must be shipped in the original collection container & performed before it is aliquoted. Entire collection should be kept refrigerated and acid added to entire collection within 20 hours. |
| ARYLSULFATASE A, URINE | ARYSUQ | ARYSUQ | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Record total volume and time of collection. Store and transport refrigerated. | |
| CALCIUM, URINE (QUANTITATIVE) | CAL-U | CAUQ | Add 30 mL 6N HCl to a 24-hour dark plastic urine container. Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to between 1.0-2.0 with 6N HCl. Record collection time and total volume. Store and transport at room temperature. | For timed urine samples, add 1 mL 6N HCL/100 mL urine at end of collection as soon as possible. Adjust pH 1.0-2.0 using HCL and let stand one hour before analysis. |
| CATECHOLAMINES, URINE (FRACTIONATED) | CAT.UF | CATUQ | Add 25 mL 6N HCl to a 24-hour dark plastic urine container at the start of the collection. Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 30 mL of a well-mixed 24-hour urine collection into a leakproof plastic container. Adjust pH to 1-3 with 6N HCl. Record collection time and total volume. Freeze within 8 hours of collection. Store and transport frozen. | 24-hour urine collected with 25 mL of 50% acetic acid or collected with no preservative, refrigerated during collection and pH adjusted to 1-3 upon receipt and frozen. |
| CHLORIDE, URINE (QUANTITATIVE) | CL-U | CLUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| CHROMIUM, URINE (QUANTITATIVE) | CHROM-U | CHRMUQ | Collect a 24-hour urine specimen or random urine collection. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection or random urine collection into a leakproof plastic urine container. Store and transport refrigerated. ARUP studies indicate that refrigeration of urine alone, during and after collection preserves specimens adequately if tested within 14 days of collection.Record total volume and collection time. Submit specimen in two ARUP Trace Element-Free Transport Tubes (43116). | |
| CITRIC ACID, URINE | CITQU | CITQU | Add 10 mL 6N HCl to a 24-hour dark plastic urine container. Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 2 or less with 6N HCl. Record total volume. Store and transport refrigerated. | Random urine specimens but there are no reference ranges available. |
| COPPER, URINE | COPPER.UR | COPPUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container or a random urine. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection or random urine collection into a leakproof plastic urine container. Store and transport refrigerated. ARUP studies indicate thatrefrigeration of urine alone, during and after collection preserves specimens adequately if tested within 14 days of collection.Record total volume and collection time. Submit specimen in two ARUP Trace Element-Free Transport Tubes (43116). | |
| CORTISOL & CORTISONE, FREE URINE (QUANTITATIVE) | CCFUQ | CCFUQ | Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 5 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record total volume. Store and transport refrigerated. | |
| CORTISOL, FREE URINE | COR-U | UFCUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 5 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated or frozen. | Specimen collected with 1 gm boric acid. |
| CREATINE, URINE | CREATINE-U | CRTUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 3 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container and freeze. Record total volume. Store and transport frozen. | |
| CREATININE CLEARANCE | CRE CL | CRCL | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Separate serum from cells and place in separate plastic tube. Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport both specimens refrigerated. | Lithium heparin plasma (green top tube) and urines preserved in the boric acid tubes (BD C&S tubes). |
| CREATININE, URINE (QUANTITATIVE) | CRE-U | CREUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens and urines preserved in the boric acid tubes (BD C&S tubes). |
| CYSTINE, URINE (QUANTITATIVE) | CYUQ | CYUQ | Collect a random urine or 24 hour urine in leakproof plastic urine container. Avoid dilute urine. | Aliquot 10 mL of a random or 24 hour urine collection into a leakproof plastic urine container and freeze immediately. Store and transport frozen. | |
| DHEA, URINE | DHEAU | DHEAU | Collect a 24-hour urine specimen. Refrigerate during collection. Do not use preservatives. | Aliquot 5 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container and freeze. Store and transport frozen. Record total volume and collection period. | |
| ELECTROPHORESIS, URINE | ELP-U | PELPUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 100 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | |
| GLOMERULAR FILTRATION PROFILE | GFP24 | GFP | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Separate serum from cells and place in separate plastic tube. Aliquot 100 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport both specimens refrigerated. | Lithium heparin plasma (green top tube) and 1 mL urine. |
| GLUCOSE, URINE (QUANTITATIVE) | GLU-U | GLUUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| GOLD, URINE | GOLD-U | GOLDUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container with no preservative or metal cap or glued inserts. | Aliquot 7 mL of a well-mixed 24-hour urine collection into a plastic container with no metal cap or glued inserts. Refrigerate within 4 hours of completion of collection. Record total volume and hours of collection. Store and transport refrigerated. | |
| HEAVY METALS, URINE (QUANTITATIVE) | HVY-U | HMUQ | Add 20 mL 6N nitric acid to a 24-hour dark plastic urine container at the start of the collection. Collect a 24-hour urine specimen. Use only SAGE, SSA jug from Fisher, GUARD, P-Splitter or HEDWIN jugs. Pretest other jugs. Do not use VOLLRATH jugs. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic container. Record collection time and total volume. Adjust pH to 2. Store and transport refrigerated. | May add 20 mL 6N HNO3 at end of collection. Adjust pH to 2. This procedure may be done after the specimen has been received at PAML, however, it must be shipped in the original collection container & performed before it is aliquoted. Entire collection should be kept refrigerated and acid added to entire collection within 20 hours. |
| HISTAMINE, URINE | HIST-U | HISTUR | Collect a 24-hour or random urine collection in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 4.5 mL of a well-mixed 24-hour or random urine collection in a leakproof plastic urine container and freeze. Record total volume and collection period. Store and transport frozen. | Samples preserved with HCl if frozen immediately. |
| HOMOCYSTINE, URINE | HOMO-U | HOMOUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record total volume. Store and transport frozen. | |
| HYDROXYPROLINE, URINE, TOTAL | HYDROXYPROLINE.T | HPTUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record total volume and collection time. Store and transport frozen. | |
| IMMUNOELECTROPHORESIS, URINE | IEP-U | IEPUQ | Collect a 24-hour urine collection in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 100 mL of a well-mixed 24-hour urine collection in a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | |
| IMMUNOELECTROPHORESIS, URINE/SERUM | IEP.SU | IEPSUQ | See component tests. | Record collection time and total volume. See component tests. | |
| IRON, URINE | IRN-U | IRONUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container with no preservative or metal caps or glued inserts. | Aliquot 10 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container with no metal caps or glued inserts. Refrigerate within 4 hours of completion of collection. Record total volume and collection period. Store and transport refrigerated. | |
| LAXATIVE SCREEN, URINE | LAX | LAXUR | Collect a 24-hour or random urine specimen. | Aliquot 20 mL of a 24-hour or random urine specimen. Store and transport frozen. | |
| LEAD, URINE (QUANTITATIVE) | LEAD-U | PBUQ | Add 20 mL 6N nitric acid to a 24-hour dark plastic urine container at the start of collection. Collect a 24-hour urine specimen. Use only SAGE, GUARD, P-Splitter or HEDWIN jugs. Pretest other jugs. Do not use VOLLRATH jugs. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Adjust pH to 2. Store and transport refrigerated. | May add 20mL 6N HNO3 at end of collection. Shake well and let stand for 2 hours shaking every 15 minutes. Adjust pH to 2. |
| MAGNESIUM, URINE (QUANTITATIVE) | MAG-U | MGUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 25 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 1 with 6N HCl. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| MANGANESE, URINE (QUANTITATIVE) | MAN-U | MANUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container or random urine collection. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection or random urine collection into a leakproof plastic urine container. Store and transport refrigerated. ARUP studies indicate that refrigeration of urine alone, during and after collection preserves specimens adequately if tested within 14 days of collection. Record total volume and collection time. Submit specimen in two ARUP Trace Element-Free Transport Tubes (43116). | |
| MELANIN, URINE | MELURS | MELURS | Collect a random or 24-hour urine specimen. Refrigerate during collection. Protect from light. | 4.5 mL aliquot of a random or 24-hour urine specimen. Protect from light. Store and transport frozen. | |
| MERCURY, URINE (QUANTITATIVE) | MERC-U | HGUQ | Add 20 mL 6N nitric acid to a 24-hour dark plastic urine container at the start of collection. Collect a 24-hour urine specimen. Use only SAGE, GUARD, P-Splitter or HEDWIN jugs. Pretest other jugs. Do not use VOLLRATH jugs. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Adjust pH to 2. Store and transport refrigerated. | May add 20 mL 6N HNO3 at end of collection. Adjust pH to 2. This procedure may be done after the specimen has been received at PAML, however, it must be shipped in the original collection container & performed before it is aliquoted. Entire collection should be kept refrigerated and acid added to entire collection within 20 hours. |
| METANEPHRINES (FRACTIONATED) | MET.FRAC | METUQ | Add 25 mL 6N HCl to a 24-hour dark plastic urine container at the start of the collection. Refrigerate during collection. | Aliquot 30 mL of a well-mixed preserved 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 1-3 and freeze. Record collection time and total volume. Store and transport frozen. | 24-hour urine collected with 10 grams of boric acid, or 25 mL of 50% acetic acid and then pH to 1-4 with 6N HCl. Specimens may also be refrigerated during collection without a preservative and then pH adjusted to 1-4 with 6N HCl upon receipt. |
| METANEPHRINES, TOTAL, URINE | MET | METTUQ | Add 25 mL 6N HCl to 24-hour dark plastic urine container. Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 30 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 1-3 with 6N HCl and freeze. Record collection time and total volume. Store and transport frozen. | 24-hour urine collected with 10 grams of boric acid, or 25 mL of 50% acetic acid and then pH to 1-4 with 6N HCl. Specimens may also be refrigerated during collection without a preservative and then pH adjusted to 1-4 with 6N HCl upon receipt. |
| METHYLMALONIC ACID, URINE | MAUQ | MAUQ | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerated during collection. | Aliquot 2 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Record total volume and collection period. Store and transport frozen. | |
| METHYLMALONIC ACID, URINE (QUANTITATIVE) | METMAL.U | MMAUQ | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerate during collection. On random urines collect the second voided specimen after overnight fast. | Aliquot 5 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Record total volume and collection period. Store and transport frozen. | |
| MICROALBUMIN URINE (24-HOUR) | M.ALB | MALBUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container with no preservative. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hours urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Urines preserved in the boric acid tubes (BD C&S tubes). |
| MICROALBUMIN-CREATININE RATIO | MALBCR | MCUC | 40 mL aliqout of random, first morning or 24-hour urine collection in a leakproof plastic urine container for random specimens or a 24-hour dark plastic urine container for 24-hour collections. Refrigerate during collection. | Store and transport refrigerated. | Urines preserved in the boric acid tubes (BD C&S tubes). |
| MYOGLOBIN, URINE (QUANTITATIVE) | MYOGLOBIN-U | MGNPUR | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 1 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Adjust pH to 8.0-9.0 immediately after collection by adding 10% Na2CO3. Store and transport refrigerated. | |
| NICKEL, URINE (QUANTITATIVE) | NICUQ | NICUQ | Collect a 24-hour or random urine in a 24-hour plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Store and transport refrigerated. ARUP studies indicate that refrigeration ofurine alone, during and after collection preserves specimens adequately if tested within 14 days of collection.Submit specimen in two ARUP Trace Element-Free Transport Tubes (43116). | |
| ORGANIC ACIDS, URINE | ORGAU | ORGAU | Collect a 24-hour or random urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour or random urine collection into a leakproof plastic urine container. Record total volume. Store and transport frozen. | |
| OSMOLALITY, URINE (QUANTITATIVE) | OSMOLAL-U | OSMUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mLof a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | |
| OXALATE, URINE (QUANTITATIVE) | OXALATE-UR | OXUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. `Refrigerate during collection. | Aliquot 25 ml of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Adjust pH to 1-2 with 6N HCL within 24 hours of the end of the collection period. Note date and time pH is adjusted. Record collection time and total volume. Store and transport refrigerated. | |
| PHOSPHORUS, URINE (QUANTITATIVE) | PHO-U | PHOSUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine collection. Adjust pH to less than 3 with 6N HCl. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| PORPHOBILINOGEN, URINE (QUANTITATIVE) | PBG | PBGUQ | Collect 24-hour urine in a dark plastic urine container. Protect from light. Refrigerate during collection. | Aliquot 100 mL of a well-mixed 24 hour urine collection in a leakproof dark plastic urine container. Upon receipt adjust pH to 8-9 with 6N HCl or 5% NaOH. Protect from light. Record collection time and total volume. Store and transport refrigerated or frozen. | 24 hour urine preserved with 7.5 grams sodium carbonate at the start of the collection. Adjust pH to 8-9 with 6N HCl or 5% NaOH. |
| PORPHYRINS, URINE (QUANTITATIVE) | POR | PORUQ | Collect a 24-hour urine specimen in a brown bottle (specimen must be protected from light). Refrigerate during collection. | Aliquot 100 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container, upon receipt adjust pH to 8-9 with 5% NaOH. Protect from light. Record collection time and total volume. Store and transport refrigerated. | 24 hour urine preserved with 7.5 grams sodium carbonate at the start of the collection and then adjusted to pH 8-9 with 5% NaOH or 6N HCl. |
| PORPHYRINS, URINE (QUANTITATIVE) + PBG | POR.PBG | PPBGUQ | Collect a 24-hour urine specimen. Collect in brown urine bottle. Protect from light. Refrigerate during collection. | Aliquot 100 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Upon receipt adjust pH to 8-9 with 5% NaOH. Record collection time and total volume. Protect from light. Store and transport refrigerated or frozen. | 24 hour urine preserved with 7.5 grams sodium carbonate at the start of the collection and then adjusted to pH 8-9 with 5% NaOH or 6N HCl. |
| POTASSIUM, URINE (QUANTITATIVE) | POT-U | KUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| PROTEIN, URINE (QUANTITATIVE) | PRO-U | PROUQP | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Specimen can be frozen, however, do not allow to thaw and refreeze. |
| SODIUM, URINE (QUANTITATIVE) | SOD-U | NAUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection in leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| TESTOSTERONE, URINE (QUANTITATIVE) | TES-U | TESUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Frozen aliquot 2 mL of a well-mixed refrigerated 24 hour urine collection into a leakproof plastic urine container. Record total volume. Store and transport frozen. | Refrigerated 24 hour urine preseved with boric acid (1 gram per 100 mL urine) and samples previously preserved with HCl if stored and transported refrigerated. |
| UREA CLEARANCE | URCLE | URCLE | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. Collect serum at the same time as urine collection. | Separate serum from cells and place in separate plastic tube. Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport both specimens refrigerated. | Frozen urine specimens, EDTA or sodium heparin plasma (lavender or green top tubes). |
| UREA, URINE (QUANTITATIVE) | UREA-U | UREAUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport refrigerated. | Frozen specimens. |
| URIC ACID, URINE (QUANTITATIVE) | UCA-U | URICUQ | Collect a 24-hour urine in a 24-hour dark plastic urine container containing 10 mL of 5% NaOH. Maintain specimen at room temperature during collection. At the end of collection adjust pH to greater than 7 with 5% NaOH. | Aliquot 40 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Record collection time and total volume. Store and transport at room temperature. | Refrigerated specimens. |
| VANILLYLMANDELIC ACID, URINE (QUANTITATIVE) | VMA | VMAUQ | Collect a 24-hour urine specimen. Refrigerate during collection. | Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container. Upon receipt adjust pH to 2 with 6N HCl. Record collection time and total volume. Store and transport refrigerated. | 24 hour urine collection preserved with 25 mL 6N HCl at start of collection, then adjust to pH to 2 with 6N HCl. 50% acetic acid or 10 grams of boric acid may also be used as preservatives. Toddlers: use 5 mL volume for preservative or 2 grams boric acid. Babies: use 2 mL volume of preservative or 1 gram boric acid. |
| ZINC, URINE (QUANTITATIVE) | ZNCUQ | ZNCUQ | Collect a 24-hour urine specimen in a 24-hour plastic urine container or a random urine collection. Refrigerate during collection. | Aliquot 10 mL of a well-mixed 24-hour urine collection or random urine collection into a leakproof plastic urine container. Store and transport refrigerated. ARUP studies indicate that refrigeration of urine alone, during and afer collection preserves specimens adequately if tested within 14 days of collection. Record total volume and collection time. Submit specimen in two ARUP Trace Element-Free Transport Tubes (43116). |