Bioavailable Testosterone,SHBG, Adult Male
Test Mnemonic
BTESTO
CPT Codes
- 84403 - QTY (1)
- 84270 - QTY (1)
- 82040 - QTY (1)
LOINC ®
1751-7; 13967-5; 2986-8
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Plasma | Lithium heparin PST (Lt. Green) | Centrifuge and refrigerate. | Submit in original tube or aliquot specimen into CCL aliquot tube |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Serum | SST (Gold) | Centrifuge and refrigerate. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 5 days |
| Frozen | 4 months |
| Refrigerated | 7 days |
Days Performed
Sun - Sat
Turnaround Time
8 hours
Methodology
| Name | Description |
|---|---|
| Bromocresol Green | |
| Electro Chemiluminescence Immunoassay (ECLIA) |
Reference Range
| Albumin | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| 18 Years | 99 Years | Normal | 3.9 - 4.9 | g/dL | Days | 4 Days | Normal | 2.8 - 4.4 | g/dL | 15 Years | 17 Years | Normal | 3.2 - 4.5 | g/dL | 1 Years | 14 Years | Normal | 3.8 - 5.4 | g/dL | 5 Days | 364 Days | Normal | 3.8 - 5.4 | g/dL |
| Sex Hormone Binding Globulin | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | 18 Years | 99 Years | Normal | 14-82 | nmol/L | Female | 21 Years | 49 Years | Normal | 25-122 | nmol/L | Female | 50 Years | 99 Years | Normal | 17 - 125 | nmol/L |
| Testosterone | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | Days | 364 Days | Normal | < 12 | ng/dL | Male | 1 Years | 5 Years | Normal | < 12 | ng/dL | Male | 6 Years | 10 Years | Normal | < 25 | ng/dL | Male | 11 Years | 15 Years | Normal | < 830 | ng/dL | Male | 16 Years | 17 Years | Normal | 102-1010 | ng/dL | Male | 18 Years | 99 Years | Normal | 193 - 824 | ng/dL | Female | Days | 364 Days | Normal | < 21 | ng/dL | Female | 1 Years | 5 Years | Normal | < 12 | ng/dL | Female | 6 Years | 10 Years | Normal | < 25 | ng/dL | Female | 11 Years | 17 Years | Normal | < 79 | ng/dL | Female | 18 Years | 99 Years | Normal | < 40 | ng/dL |
| Testosterone, Bioavailable | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | Normal | 105 - 324 | ng/dL | ||
| Testosterone, Free Calculation | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 38-120 | pg/mL | |||
| Testosterone, Percent Free | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | Normal | 1.1 - 2.6 | % |
Special Info
Patients taking a biotin dose of up to 5 mg/day should refrain from taking biotin for 4 hours prior to sample collection. Patients taking a biotin dose of 5 to 10 mg/day should refrain from taking biotin for 8 hours prior to sample collection. Patients taking a biotin dose > 10 mg/day should consult with their physician or the laboratory prior to having a sample taken. Clinicians should consider biotin interference as a source of error, when clinically suspicious of the laboratory result.
Clinical Limitation
These calculations have only been validated for adult males.