18-Hydroxycorticosterone, Serum (Endocrine Sciences)

CPT: 82542
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Test Details


Mass spectrometry (MS)

Reference Interval

• Premature (26 to 28 weeks): day 4: 10−670 ng/dL

• Premature (31 to 35 weeks): day 4: 57−410 ng/dL

• Full-term (31 days to 11 months): 5−220 ng/dL

• 12 to 23 months: 18−155 ng/dL

• 24 months to 9 years: 6−85 ng/dL

• 10 to 14 years: 10−72 ng/dL

• Adults: 9−58 ng/dL

• 8 AM supine upright: 5−46 ng/dL

Specimen Requirements


Serum (preferred) or plasma, frozen


3 mL

Minimum Volume

1 mL (Note: This volume does not allow for repeat testing.)


Gel-barrier tube, lavender-top (EDTA) tube, or green-top (heparin) tube


Separate serum or plasma from cells within 45 minutes of collection. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions


Stability Requirements



Room temperature

1 day


1 day


90 days


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
500778 18-Hydroxycorticosterone, S 500779 18-Hydroxycorticosterone, S ng/dL 1674-1

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