18-HYDROXYCORTICOSTERONE
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Separate samples must be submitted when multiple tests are ordered.
SPECIMEN REQUIREMENTS
Container Type SST tube
Specimen Type Frozen serum
Preferred Volume 3 mL
Minimum Volume 1 mL
Specimen Processing Separate serum from cells within 1 hour of collection and place in separate plastic tube and freeze. Store and transport frozen. This is a critical frozen sample.
Stability Room Temp 1 day   Refrigerated 2 days   Frozen (-20°C) 3 months (only 2 freeze/thaw cycles)  
Alternate Specimens Plasma
Reference Laboratory Esoterix
Reference Lab Test Code 500088
CPT Codes 82542
Test Schedule Mon
Turnaround Time 4-10 days
Method HPLC/MS
Test Includes 18-Hydroxycorticosterone, ng/dL.
Reference Ranges 
18-Hydroxycorticosterone         ng/dL
 Premature infant           10-670
  (26-28 weeks) Day 4
 Premature infant           57-410
  (31-35 weeks) Day 4
 Full-term infant
  3 days                    31-546
  1-12 months               5-220
 Children
  1-2 years                 18-155
  2-10 years                6-85
  10-15 years               10-72
 Adults                     9-58
  Normal Na intake
   8 am supine              4-21
   8 am upright             5-46
  Low Na intake
   8 am supine              11-75
   8 am upright             19-96
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:: Interface Codes ::

typeorder codetest descriptionresult coderesult descriptionunitsdecimal placesloinc code
o83519.Z718-Hydroxycorticosterone
r83519.Z718-Hydroxycorticosterone83519.Z718-Hydroxycorticosteroneng/dL01674-1


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