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Testicular Function Profile III

Test ID: 


CPT code:

83001, 83002, 84146, 84403, 84436, 84443, 84479

Clinical Use:

Helpful in assessing testicular function in males.

Test Information:

Follicle-stimulating hormone (FSH); free thyroxine index (FTI); luteinizing hormone (LH); prolactin; T3 uptake (THBR); testosterone; thyroid-stimulating hormone (TSH); thyroxine (T4)

Specimen Type:


Requested Volume: 

3 mL

Minimum Volume: 

2  mL (Note: This volume does not allow for repeat testing.)

Container Type: 

Red-top tube or gel-barrier tube

Patient Preparation: 

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.


If tube other than a gel-barrier tube is used, transfer separated serum to a plastic transport tube.

Storage Instructions:


Stability Requirements:



Room temperature

7 days


14 days


14 days

Freeze/thaw cycles

Stable x2



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