18-Hydroxycorticosterone, Serum (Endocrine Sciences)

TEST: 500778
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CPT: 82542
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Expected Turnaround Time

5 - 12 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Specimen Requirements

Specimen

Serum (preferred) or plasma, frozen

Volume

3 mL

Minimum Volume

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

Container

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

Collection

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

Freeze

Stability Requirements

Temperature

Period

Room temperature

1 day

Refrigerated

1 day

Frozen

90 days

Test Details

Methodology

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 Day 3: 31-546 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

• 8:00 AM Supine: 4-21 ng/dL

• 8 AM supine upright: 5−46 ng/dL

LOINC® Map

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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