3913 Testosterone, Weakly Bound w/ High Sensitivity Total & Free

Components
NAME METHOD REFERENCE RANGE UNITS
Testosterone, Total [RIA] RIA  view ref range  ng/dL 
Testosterone Bioavailable RIA  view ref range  ng/dL 
Testosterone, % Free Dialysis EQ DIAL  view ref range  % 
Testosterone, Free Dialysis CALC  view ref range  pg/mL 


Specimen Requirements
TYPE VOLUME TEMPERATURE INSTRUCTIONS
PRIMARY
1 Serum 4 (1.5) mL   Refrigerated - 7 Day(s), Frozen - 2 Month(s)  


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.


Collection Instruction
Frozen specimen is preferred.


Reported: Next day

CPT Code: 83519, 84402, 84403