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ACTH, Roche Elecsys
Test Code31669
CPT Codes
82024
Preferred Specimen
1.5 mL frozen plasma collected in an EDTA (lavender-top) tube
Minimum Volume
0.5 mL
Other Acceptable Specimens
Frozen plasma collected in: PPT (white-top) tube
Instructions
Collect specimens between 7 am and 10 am. 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 for 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 for depressed.
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
Sets up 5 days a week.
Clinical Significance
ACTH determinations are valuable in the differential diagnosis of adrenal insufficiency and hypersecretion.
