Test Name
Bioavailable Testosterone
Type SpecimenSerum
LIS CodeBIOTST
AvailabilityMonday - Friday only
Lab Section
Pathology Core Reference Laboratory
Fluid TypeSerum separated from whole blood
Fluid Type And Minimum VolumeSerum 0.8 mL
Specimen Tube Type Transport
Red top serum only
Container Whole Blood Required3 mL filled tube or 6 mL tube
Critical ValueNone
Summary Test NameTestosterone, Calculated Bioavailable
Special Handling InstructionsNo serum separator or gel tubes
Specimen StabilityAmbient 24 hours, refrigerated 1 week, frozen 6 months
Minimum Volume0.8 mL
Specimen Preparation In HouseSeparate serum from cells as soon as possible or within 2 hours of collection
Stat AvailabilityNo
Test Turnaround Time Routines And Stats2-5 days, stat not available
Draw date: Monday, Tuesday, Wednesday-Analysis date Thursday- result reported Friday
Draw date: Thursday, Friday, Saturday, Sunday-Analysis date Monday-Result reported Tuesday
Collect between 06:00 - 10:00 AM
Preferred Volume1.0 mL
Reference ValueAGE | FEMALE ng/dl | MALE ng/dl |
1-6 yo | less than 1.2 | less than 1.2 |
7-9 yo | 0.3-4.5 | 0.3-2.5 |
10-11 yo | 0. 4-5.6 | 0.1-16.1 |
12-13 yo | 1.5-16.9 | 1.3-259.2 |
14-15 yo | 2.7-20.3 | 8.6-303.3 |
16-17 yo | 3.0-25.7 | 31.5-458-1 |
18-30 yo | 2.0-18.5 | 18 and older 117-612 |
31-40 yo | 3.7-23.0 | |
41-51 yo | 2.5-14.9 | |
postmenopausal | 1.4-8.5 | |
Tanner Stages | ||
Stage I | 0.3-5.0 | 0.3-11.7 |
Stage II | 1.1-13.5 | 0.3-53.1 |
Stage III | 3.4-25.2 | 1.7-266.4 |
Stage IV | 2.5-35.1 | 36-436.5 |
Stage V | 2.3-20.7 | 111.6-536-4 |
Test Results
ng/dL