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Test ID:
BTTEST
Testosterone – Total and Bioavailable, Serum
Test Overview
Method
Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Result Included
Total Testosterone; Bioavailable Testosterone
Specimen
Specimen Type
Serum
Volume
Sample Volume
2 mL
Collection & Handling
Handling Information
Store and send frozen.
Stability
| Ambient | Refrigerated | Frozen |
|---|---|---|
| 4 hours | 4 days | 1 month |
Rejection Criteria
| Criteria | Specification |
|---|---|
| Hemolysis | Gross |
| Lipemia | Gross |
Performance & Interpretation
Turnaround Time
10 days
Results
Name
Units
Reference Range
Conversion
-
Total Testosteronenmol/LMales
0 to < 1 years: < 15.00
1 to < 9 years: < 1.10
9 to < 11 years: < 14.65
11 to < 12 years: 2.20 - 25.75
12 to < 15 years: 6.20 - 25.75
15 to < 19 years: 6.50 - 29.50
19 to < 50 years: 8.60 - 29.00
>= 50 years: 6.60 - 25.00
Females
0 to < 10 years: < 1.02
10 to < 12 years: < 1.11
12 to < 13 years :< 1.53
13 to < 15 years: 0.16 - 1.67
15 to < 19 years: 0.16 - 2.13
19 to < 50 years: 0.29 - 2.41
>= 50 years: 0.10 - 2.13 -
Bioavailable Testosteronenmol/LMales
0 up to 20 years <= 6.80
20 up to 30 years 2.07 - 6.80
30 up to 40 years 1.77 - 6.20
40 up to 50 years 1.47 - 5.60
50 up to 60 years 1.17 - 4.98
60+ 0.90 - 4.38
Females
0 up to 10 years < 0.10
10 up to 14 years < 0.20
14 up to 20 years < 0.40
20+ years < 0.10
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| BTTEST | Testosterone, Total | 66393 | nmol/L |
| Testosterone, Bioavailable | 66394 | nmol/L |
Test Version
Last Updated
2026-10-05