Test Directory

Clear All
Test Code
18HC
Test Name
18-Hydroxycorticosterone
CPT Codes
82542
Expected Turnaround Time
5 - 12 days
Specimen and Container Info

Preferred Specimen Type: Serum 

Alternate Specimen Type: Plasma 

 

Preferred Collection Container: Gold Top, Serum Separator 

Alternate Collection Container: Lavender Top (EDTA) or Green Top (Sodium or Lithium Heparin) 

 

Desired Specimen Volume: 3 mL 
Collection Instructions
  1. Collect a gold top, serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells within 45 minutes of collection.
  2. Transfer 3 mL of serum to a LabCorp pp transpak frozen purple tube.
  3.  To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Transport Instructions

Transport to the laboratory frozen.
Stability Requirements

Room Temperature

1 day

Refrigerated

1 day

Frozen

90 days
Methodology
Mass spectrometry (MS)
Reference Intervals

 See patient report.
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine, 1 time per week
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
© 2026 HNL Lab Medicine. All rights reserved.