Testosterone, Free and Total Build info

Synonyms

• TESTOSTERONE, FREE
• TTF
• DIRECT
• HORMONE
• LAB173

Short Name

TESTOSTERONE

Procedure Master Number

LAB173

Procedure ID

994

Clinical Info

Cerner Test order is TESTF

Specimen Type

Blood

Container

Collection Instructions

Specimen Type: Serum Container/Tube: Gold-top tube
Specimen: 1 mL (0.5mL min)
 Two separate containers
 Free Testosterone must be frozen within 24 hrs of collection
 
 There is significant diurnal variation in serum or plasma testosterone.
Specimens should be drawn in the morning when levels are highest.

Transport Instructions

Refrigerated Total Testosterone
Frozen - Free Testosterone

Specimen Stability

Total Testosterone
7 Days  Room Temperature
14 Days Refrigerated

Free Testosterone
   Unacceptable room temp or refrigerated
  

Methodology

Total testosterone- Electrochemiluminescence Immunoassay (Roche Modular)
Free Testosterone- ELISA

Days Performed

TAT; 2-4 days

Performing Laboratory

Northwell Health Laboratories

CPT

84402,84403

PDM

211266

Results