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Register NowTestosterone, Free, Direct With Total Testosterone
Create a Free Account to View PricesTurnaround Time: 1-3 days
CPT Code:
84402, 84403
Test Type: 2 ml Serum
Stability Time:
|
Temperature |
Period |
|---|---|
|
Room temperature |
14 days |
|
Refrigerated |
14 days |
|
Frozen |
14 days |
|
Freeze/thaw cycles |
Stable x3 |
Overview:
Evaluate hirsutism and masculinization in women; evaluate testicular function in clinical states where the testosterone binding proteins may be altered (obesity, cirrhosis, thyroid disorders). See individual test descriptions for more information.
A pediatric reference interval has not been established for the direct free testosterone test.
Collection Details:
Collection Instructions:
State patient's age and sex on the test request form.
This panel includes Testosterone, Total, which may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to ask all patients who may be indicated for this test about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.
Red-top tube or gel-barrier tube.
If a red-top tube is used, transfer separated serum to a plastic transport tube.
Room temperature.