Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

TESTOSTERONE: TOTAL, FREE AND BIOAVAILABLE

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB3140         Geisinger Epic ID: 35861

SPECIMEN COLLECTION
Specimen type:
Plasma or serum
Preferred collection container:
Specimen required:
2 mL serum or plasma; minimum 0.5 mL.
Patient preparation:
For patients receiving high biotin doses, wait until 8 hours after last dose.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma. 
Transport temperature:
Refrigerated (preferred) or frozen.
Specimen stability:
Refrigerated: 1 week. Frozen: 6 months.
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
Sex hormone binding globulin (SHBG):
Males: 12-91 nmol/L
Females: 17-176 nmol/L

Total Testosterone:
Males: 18-49 years 249-836 ng/dL
>49 years 193-740 ng/dL
Females: > 18 years 2-48 ng/dL

Albumin: 3.8-5.0 g/dL

Calculated free testosterone:
Males: 35-130 pg/mL
Females: 0.2-7.8 pg/mL

Calculated bioavailable testosterone:
Males: 79-335 ng/dL
Females: 0.4-19 ng/dL
CPT code(s):
82040, 84403, 84270
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Sex hormone binding globulin (SHBG), total testosterone, albumin, calculated free testosterone, calculated bioavailable testosterone.
Methodology:
Electrochemiluminescence
Spectrophotometric (Colorimetric)
Synonyms:
TESTOB
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 12/24/2020

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Mariana Moyer, Jared Shepherd
Frequency: Daily, Monday-Saturday
Performed stat? No
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