3917 Testosterone, Weakly Binding

Components
NAME METHOD REFERENCE RANGE UNITS
Testosterone Free RIA  view ref range  ng/dL 
Testosterone Bioavailable RIA  view ref range  ng/dL 
Testosterone Total CL  view ref range  ng/dL 


Specimen Requirements
TYPE VOLUME TEMPERATURE INSTRUCTIONS
PRIMARY
1 Serum 4 (2) mL   Refrigerated - 7 Day(s), Frozen - 2 Month(s) Frozen specimen preferred. 


Clinical utility
Total testosterone includes free testosterone, weakly bound testosterone (bound to albumin), and tightly bound testosterone (bound to SHBG or sex hormone binding globulin). Because testosterone can dissociate from the albumin carrier and rapidly diffuse into target cells, albumin-bound or weakly bound testosterone is also available to target tissues.


Reported: Next day

CPT Code: 83519, 84402, 84403