|Last Updated: June 5, 2023 @ 9:13 am|
|Stability:||Ambient: 1 Day(s); Refrigerated: 4 Day(s); Frozen: 12 Month(s); Incubated: Unacceptable|
Cortisol reference range varies depending on time of draw, see reference ranges below.
Cortisol Reference Range:
Cortisol (AM) = 6.02-18.4 ug/dL
Cortisol (PM) = 2.68-10.5 ug/dL
Biotin in specimens taken from patients on high-dose biotin therapy or supplements may intefere with this test and cause inaccurate test results. It is recommended that for patients receiving therapy with high biotin doses (> 5 mg/day), no laboratory test specimen should be collected until at least 8 hours after the last biotin administration.
It is preferable to locate tests on the website and not rely on printed test information, which may soon be out of date.
Updated test information can only be guaranteed by using this website.