Sign in →

Browse by Name

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #
 

 

HELPFUL LINKS!

 

LAB COMMUNICATIONS 

 

COLLECTION & HANDLING

 

SPECIMEN TRANSPORTATION

Please call 616.774.7721 for specimen pick up

 

GENERAL INFORMATION

 

GENERAL TEST INFORMATION

 

BILLING

 

WEBSITES

Mayo Clinic Laboratories

Epic Code LAB173 Testosterone Free and Total

Quick Collect

10257

Collection Instructions

+S/PO/R

Specimen Stability

Specimen Collection: Blood

 

Container(s): 

CHW: Red top (no additive, PREFERRED), Gold top (SST-Gel, acceptable)

Preferred Volume to Collect: 6.0 mL

Minimum Volume to Collect: 3.0 mL

Neonate Volume to Collect: 3.0 mL

Capillary collect ok? Yes

Microtainer acceptable?  Yes

 

Collection Instructions:

  • After collection, gently invert tube 8-10 times.
  • Specimen should be processed within 2 hours – See Processing Instructions.

 

Processing Instructions (Laboratory, Outpatient or Off-site collection)

  • Processed Specimen: Serum
  • Centrifuge/Spin: Yes
  • Aliquot: Yes
  • Processing Instructions:
  • Gold or Red Tube/Serum: Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.
  • Minimum volume: 1.5 mL
  • Transport Temperature: Refrigerate

 

Reference Range

Ambient: 72 hours

Refrigerate: 7 days

Frozen: 14 days

Laboratory Retention: 7 days

Performing Department

Batched and run 2 times per week, TAT 3 – 7 days.

Performing Department Laboratory Location

Free Testosterone
Male
16 Years – 150 Years: 9 – 30 ng/dL

Female
16 Years – 150 Years: 0.3 – 1.9 ng/dL

Total Testosterone.
Male
0 Minutes – 6 Months: 75 – 400 ng/dL
6 Months – 10 Years: 0 – 20 ng/dL
10 Years – 12 Years: 0 – 130 ng/dL
12 Years – 14 Years: 0 – 800 ng/dL
14 Years – 15 Years: 0 – 1200 ng/dL
15 Years – 17 Years: 100 – 1200 ng/dL
17 Years – 19 Years: 300 – 1200 ng/dL
19 Years – 150 Years: 240 – 950 ng/dL

Female
0 Minutes – 6 Months: 20 – 80 ng/dL
6 Months – 10 Years: 0 – 20 ng/dL
10 Years – 12 Years: 0 – 44 ng/dL
12 Years – 17 Years: 0 – 75 ng/dL
17 Years – 19 Years: 20 – 75 ng/dL
19 Years – 150 Years: 8 – 60 ng/dL

Methodology

Toxicology

CPT

Corewell Health Reference Laboratory, Grand Rapids, MI

CDM Code

Liquid Chromatography-Mass Spectrometry

 

This test was developed and its performance characteristics determined by Spectrum Health Toxicology Laboratory. It has not been cleared or approved by the FDA. The laboratory is regulated under CLIA as qualified to perform high-complexity testing. This test is used for clinical purposes. It should not be regarded as investigational or for research.

 

Epic Test ID

84403, 84402

LOINC

3018440302, 3018440201

Mayo Access Code

1230101205

Reviewed Date

Free Testosterone : 2991-8

Total Testosterone : 2986-8