|Last Updated: September 25, 2020 @ 9:13 am|
Testosterone, Free + Total
|Stability:||Ambient: 8 Hour(s); Refrigerated: 3 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable|
The concentration of free testosterone is derived from a mathematical expression based on the constant for the binding of testosterone to sex hormone binding globulin.
|Interpretive Data:||Please see report for interpretive data.|
Biotin in specimens taken from patients on high-dose biotin therapy or supplements may intefere with at least one test in this panel 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 taken until at least 8 hours after the last biotin administration.
Please Note: Sex HB Globulin, Free Testosterone, and %Free Testosterone reference range changes as of 11/7/2019.