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HelpTest Code LAB847 Cosyntropin Stimulation Test, Adrenal Insufficiency, Plasma or Serum
Additional Codes
| Test Name in EPIC | EPIC Test Code | Mnemonic |
|---|---|---|
| CST-ADREN INSUFF | LAB847 | CSTAI |
Methodology
Chemiluminescent Microparticle Immunoassay (CMIA)
Specimen Requirements
Patient Preparation
Instruct patients receiving cortisone, hydrocortisone, or spironolactone to omit their pre-test doses the day of testing.
Performance of Test
1. This test begins with drawing a baseline specimen.
2. Nursing then administers 0.25 mg of cosyntropin by intravenous push (intramuscular acceptable).
3. Specimens are drawn at exactly 30-, and 60-minutes from time dosage was administered. Collect the specimen in LIS at time of draw.
Submit only 1 of the following specimens:
Preferred:
Specimen Type: Plasma
Container/Tube: Light-green top (lithium heparin gel)
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.15 mL
Additional Information: Label specimens as BASCOR (baseline), 30 COR (30 minutes), and 60 COR (60 minutes).
Spin down, separate and aliquot within 8 hrs of draw.
Alternate:
Specimen Type: Serum
Container/Tube: Serum gel
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.15 mL
Additional Information: Label specimens as BASCOR (baseline), 30 COR (30 minutes), and 60 COR (60 minutes).
Spin down, separate and aliquot within 8 hrs of draw.
Specimen Transport Temperature
Refrigerate 5 days/Frozen OK/Ambient 8 hours OK
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Chemistry -
Central Region: St. Joseph's Medical Center Lab
East Region: SMDC Clinical Lab
Test Classification and CPT Coding
82533 x 3
Reference Values
8 a.m.: 6.0-19.4 µg/dL
4 p.m.: 3.0-16 µg/dL
*Patients taking spironolactone or women taking drugs which contain estrogen may exhibit abnormally high basal cortisol levels.