General Information

UPHSM LIS Test #: 8584
Schedule: Tuesday
Testing Time: 1 days
Testing Lab: Mayo Labs

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 1.0 mL Serum
Temperature: Refrigerate
Tube Type: 1 Red Top
Collection Info:
Draw blood in either a plain, red-top tube or an SST tube. Spin down and send 1.0 mL of serum frozen in plastic vial on dry ice.
Refrigerated specimens are acceptable if received within 7 days from time of draw.


Immunochemiluminescent assay

CPT Codes


* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range


< or =5 days: < or =50 ng/mL

6 days-12 weeks: < or =10 ng/mL
3 months-17 years: < or =1.2 ng/mL
Tanner II-IV*: < or =1.2 ng/mL

Males: < or =0.5 ng/mL
Premenopausal females: < or =1.2 ng/mL
Postmenopausal females: < or =1.8 ng/mL
Pediatric and adult reference values based on Mayo studies.

*Puberty onset (transition from Tanner stage I to Tanner stage II) occurs for boys at a median age of 11.5 (+/-2) years and for girls at a median age of 10.5 (+/-2) years. There is evidence that it may occur up to 1 year earlier in obese girls and in African American girls.
For boys, there is no proven relationship between puberty onset and body weight or ethnic origin. Progression through Tanner stages is variable.
Tanner stage V (adult) should be reached by age 18.