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ACTH, Roche Elecsys
Test Code31669
CPT Codes
82024
Preferred Specimen
1.5 mL plasma collected in an EDTA (lavender-top) tube
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in an EDTA PPT (white-top) tube
Instructions
Collect specimens between 7am and 10am. If drawn at any other time, the reference ranges do not apply.
Only use pre-cooled sampling vials. After drawing the blood, put the vials immediately on ice. Use a cooled centrifuge to separate the plasma.
ACTH measurement is not recommended for patients who have been administered cosyntropin [(ACTH (1-24)] because the results may be falsely elevated or depressed.
Only use pre-cooled sampling vials. After drawing the blood, put the vials immediately on ice. Use a cooled centrifuge to separate the plasma.
ACTH measurement is not recommended for patients who have been administered cosyntropin [(ACTH (1-24)] because the results may be falsely elevated or depressed.
Transport Container
Transport tube
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days
Refrigerated: Unacceptable
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Plasma other than EDTA plasma
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Tues-Sat; Report available: 1-2 days
Reference Range
| <18 years | Not established |
| ≥18 years | 7.2 - 63.3 pg/mL |
Clinical Significance
ACTH determinations are valuable in the differential diagnosis of adrenal insufficiency and hypersecretion.
