Adrenocorticotropic Hormone (ACTH), Plasma, Seven Specimens
Use
The Adrenocorticotropic Hormone (ACTH) Plasma test measures the level of ACTH, which is important for assessing the functioning of the adrenal glands. This test is often used in the evaluation of conditions affecting the pituitary or adrenal glands, such as Cushing's disease, Addison's disease, or other disorders of the hypothalamic-pituitary-adrenal axis.
Special Instructions
Instructions for suppression/stimulation tests involving ACTH measurement can be found in the Endocrine Appendix of the LabCorp Directory of Services. This panel requires drawing multiple tubes at different time points and may involve a drug or other treatment intervention. Ensure to stop any high-dose biotin supplementation at least 72 hours prior to specimen collection to avoid potential interference.
Limitations
This test may exhibit interference if the sample is collected from individuals taking high doses of biotin, also known as vitamin B7. Therefore, it is recommended to suspend biotin intake for a minimum of 72 hours before specimen collection. Results should also be interpreted considering the timing of sample collection relative to any treatment administered as part of the series panel.
Methodology
Immunoassay (ELISA)
Biomarkers
LOINC Codes
- 42598-3
- 46963-5
- 39564-0
- 12458-6
- 12459-4
- 12460-2
- 12461-0
- 12462-8
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
This panel is a series that requires multiple tubes to be drawn at various time points. Ensure the patient has stopped taking biotin at least 72 hours prior to collection.
Patient Preparation
Patients should be instructed to stop biotin consumption at least 72 hours prior to specimen collection due to potential interference.
Other tests from different labs that may be relevant