Cortisol Response to ACTH Stimulation, Serum
Test Summary
ALA is a precursor to uroporphyrin, coproporphyrin, and protoporphyrin. Concentrations of ALA are greatly increased in many patients with acute neurological forms of porphyria's and in some patients with chronic alcohol abuse.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum (x4) collected in red-top tubes (no gel)
Minimum Volume
0.2 mL for each timed specimen
Instructions
Draw morning baseline specimen. Administer 250 mcg Cortrosyn. Draw additional specimens at 15, 30 and 60 minutes. For each timed specimen submitted, each tube must be clearly marked with time drawn. Submit all tubes with one test request form.
Quest will accept a baseline and any of the time intervals listed as long as this is indicated on the order and samples clearly labeled with collection times.
Quest will accept a baseline and any of the time intervals listed as long as this is indicated on the order and samples clearly labeled with collection times.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 14 days
- Refrigerated: 21 days
- Frozen: 1 year
Limitations
N/A
Other Acceptable Specimens
Plasma collected in EDTA (lavender-top) tubes
Unacceptable Specimens
Gross hemolysis • Serum separator tubes (SST)
Order Code
ACTHST
EPIC (Premier) Code
LAB3919
Includes
Cortisol Response, Baseline
Cortisol Response, 15 Minutes
Cortisol Response, 30 Minutes
Cortisol Response, 60 Minutes
Cortisol Response, 15 Minutes
Cortisol Response, 30 Minutes
Cortisol Response, 60 Minutes
CPT Code
- 82533 (x4)
Billing Code
- 670518
CPT Statement
Methodology
Chromatography/Mass Spectrometry
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675
33608 Ortega Highway
San Juan Capistrano CA, 92675
Department
Reference Testing
Reference Range
| Cortisol Baseline | 5-21 mcg/dL |
| Cortisol 15 minutes | 13-30 mcg/dL |
| Cortisol 30 minutes | 14-36 mcg/dL |
| Cortisol 60 minutes | 14-41 mcg/dL |
Setup Schedule / Expected Turnaround Time
Monday - Saturday; Report available: 2 - 6 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum (x4) collected in red-top tubes (no gel)
Minimum Volume
0.2 mL for each timed specimen
Instructions
Draw morning baseline specimen. Administer 250 mcg Cortrosyn. Draw additional specimens at 15, 30 and 60 minutes. For each timed specimen submitted, each tube must be clearly marked with time drawn. Submit all tubes with one test request form.
Quest will accept a baseline and any of the time intervals listed as long as this is indicated on the order and samples clearly labeled with collection times.
Quest will accept a baseline and any of the time intervals listed as long as this is indicated on the order and samples clearly labeled with collection times.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 14 days
- Refrigerated: 21 days
- Frozen: 1 year
Limitations
N/A
Other Acceptable Specimens
Plasma collected in EDTA (lavender-top) tubes
Unacceptable Specimens
Gross hemolysis • Serum separator tubes (SST)
Result Information
Methodology
Chromatography/Mass Spectrometry
Testing Laboratory
N/A
Reference Range
| Cortisol Baseline | 5-21 mcg/dL |
| Cortisol 15 minutes | 13-30 mcg/dL |
| Cortisol 30 minutes | 14-36 mcg/dL |
| Cortisol 60 minutes | 14-41 mcg/dL |
Setup Schedule / Expected Turnaround Time
Monday - Saturday; Report available: 2 - 6 days