Immediate Test Change
Test Delay – Testosterone, Total and Free, Serum (TFTEST)
Effective July 18, 2022.
Delayed Test
Testosterone, Total and Free, Serum (TFTEST)
Send-out Testosterone, Total and Free, Serum (TFTEST) testing performed at Mayo Clinic Laboratories is currently delayed for approximately three weeks.
At this time, Mayo Clinic Laboratories does not have an estimate for when turnaround time will return to the expected value of four to six days.
Note:
Specimens are stable for 60 days when frozen.
Alternative Tests
Bioavailable Testosterone, SHBG, Adult Male (BTESTO)
In-house test for total testosterone by immunoassay and calculated bioavailable testosterone for adult males.
Bioavailable Testosterone/SHBG, Female & Child (BTSTFC)
Send-out test for total testosterone by LC-MS/MS and calculated bioavailable/free testosterone for children and adult females.