Testosterone, Total-44
Test info
Testosterone, Total
44
84403.0
TST
Specimen
Samples should not be taken from patients receiving therapy with high biotin doses (i.e., > 5 mg/day) until at least 8 hours following the last biotin administration
Serum
1.0 mL
0.5 mL
Immediately following collection, mix sample by gently inverting 5 times
Gold:
- Allow sample to clot for a minimum of 30 minutes
- Spin within two (2) hours of sample collection
Red:
- Allow sample to clot
- Spin
- Transfer serum to a False bottom plasma/serum transport vial/tube (AHL), labelled as serum, within two (2) hours of sample collection
Lithium heparin (Li hep) plasma
Immediately after collection, mix tube thoroughly by gentle inversion, 8 - 10 times, to prevent clotting
- Spin
Lt green plasma separator (PST)
Refrigerated (preferred) - 14 days
Ambient - 5 days
Frozen - 6 months
- Improper labels (unlabeled or mislabeled)
- Hemolysis
- Improper anticoagulant or ratio
- Delay in transport
- Improper storage temperature affecting results
- Improper container
- Leaking container resulting in compromised specimen
- Quantity not sufficient (QNS)
Performance
AHL - Chemistry: C
Daily
1 - 2 days
Electrochemiluminescence immunoassay (ECLIA)
Clinical and Interpretive info
Male:
| 20 yrs - 50 yrs: | 249 - 836 ng/dl |
| >50 yrs: | 193 - 740 ng/dl |
Female:
| 20 yrs - 50 yrs: | 8.40 - 48.1 ng/dl |
| >50 yrs: | 2.90 - 40.8 ng/dl |
Billing
84403
Tracking
11/30/2001
08/01/2023
01/12/2024