Testosterone, Free, Direct With Total Testosterone
Test Code: 140103
Performing Lab: LabCorp
CPT Code: 84402 001 84403 001
Synonym
Free Testosterone, Direct and Total
Specimen Type
Serum
Specimen Container
Red-top tube or gel-barrier tube
Volume
2 mL
Minimum Volume
1 mL (NOTE: This volume does NOT allow for repeat testing.)
Specimen Handling
If a red-top tube is used, transfer separated serum to a plastic transport tube.
Unacceptable Conditions
Gross lipemia (may yield erroneously high free testosterone results); plasma specimen; gross hemolysis and/or gross icterus cause for rejection of direct free testosterone
Temperature
Room temperature
Methodology
Free: Direct analog enzyme immunoassay (EIA) Total: Electrochemiluminescence Immunoassay (ECLIA)
Stability
Room Temperature: 14 days
Refrigerated: 14 days
Frozen: 14 days
Refrigerated: 14 days
Frozen: 14 days
| Result Code | Result Name | LOINC |
|---|---|---|
| 004227 | Testosterone | 2986-8 |
| 144981 | Free Testosterone(Direct) | 2991-8 |
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