Test Overview
Test Methodology

HPLC-Tandem Mass Spectrometry

Reference Range *

Premature (26 - 28 Weeks) Day 4: 10 - 670 ng/dL; Premature (31 - 35 Weeks) Day 4: 57 - 410 ng/dL; Full Term Day 3: 31 - 546 ng/dL; 1 - 11 Months: 5 - 220 ng/dL; 1 year old: 18 - 155 ng/dL; 2 - 9 Years: 6 - 85 ng/dL; 10 - 14 Years: 10 - 72 ng/dL; Adults: 9 - 58 ng/dL; Adults 8:00 AM Supine: 4 - 21 ng/dL; Adults 8:00 AM Upright: 5 - 46 ng/dL.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday
Analytic Time

3 - 14 days

Soft Order Code
FHC18
MiChart Code
18-Hydroxycorticosterone
Synonyms
  • Hydrocorticosterone, 18-
  • HYD18
  • 18-HYDROXYCORTICOSTERONE
Laboratory
Sendout
Reference Laboratory
Mayo HYD18 (80744) (Esoterix Endocrinology 500088)
Section
Special Testing
Test Updated
11/18/2020
Update Type
Replacement Test
Specimen Requirements
Collection Instructions

Collect specimen in red top or SST tube. Centrifuge, aliquot serum into a plastic vial within 1 hour of collection and freeze.

Yellow Top Tube
Normal Volume
3 mL serum
Minimum Volume
1 mL serum
Additional Information

Test sent to Mayo Medical Laboratories; performed by Esoterix Endocrinology.

Billing
CPT Code
82542
Fee Code
20426
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