Testosterone, Free, Equilibrium Ultrafiltration with Total Testosterone, LC/MS-MS

Alphabetical Test listing

Testosterone, Free, Equilibrium Ultrafiltration with Total Testosterone, LC/MS-MS-13510

  
Testosterone, Free, Equilibrium Ultrafiltration with Total Testosterone, LC/MS-MS
  
13510
  
LAB13510
  
TESTF
  
Testosterone, free and total
  
  • Testosterone, Total, LC/MS
  • Testosterone, Free
  • % Free Testosterone
  
  • Evaluate hirsutism and masculinization in women
  • Evaluate testicular function in clinical states in which the testosterone-binding proteins may be altered (obesity, cirrhosis, thyroid disorders)
  
Serum
  

Gold serum separator (SST) tube x 2

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

 

Note: Collect 2 Gold SST tubes

Immediately following collection, mix sample by gently inverting 5 times

  
  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin and transfer aliquot within one (1) hour of sample collection

 

  

Gold serum separator (SST) tube

 

  

Red serum vial/tube, 10 mL

Red serum vial/tube, 5 mL

  
  1. Allow sample to clot
  2. Spin within one (1) hour of sample collection
  3. Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum
  

Transfer vial/tube with cap - 12mL (LabCorp)

 

  

Ambient (preferred)- 7 days

Refrigerated - 7 days

Frozen - 14 days

Freeze/thaw cycles - stable x9

  
  • Gross lipemia (may yield erroneously high testosterone results)
  • Recently administered isotopes
  • Plasma specimen received
  • Improper labeling
  • Specimen drawn in citrate or ACD tube
  
LabCorp Burlington (070038): R-LC
  
Daily
  
4 - 6 days
  

Free: Equilibrium ultrafiltration

Total: Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

  

See report

  
84402
84403
  
Result 2986-8, 2991-8, 15432-8
  
04/11/2019
  
10/18/2023
  
10/18/2023