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Geisinger Medical Laboratories Test Catalog
TESTOSTERONE: TOTAL, FREE AND BIOAVAILABLE |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB3140 Geisinger Epic ID: 35861 | |
SPECIMEN COLLECTION |
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Specimen type: |
Plasma or serum | |
Preferred collection container: |
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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 |
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Specimen processing instructions: |
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. | |
Transport temperature: |
Refrigerated (preferred) or frozen. | |
Specimen stability: |
Refrigerated: 1 week. Frozen: 6 months. | |
Rejection criteria: |
Stability limits exceeded. | |
TEST DETAILS |
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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 |
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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) |
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Synonyms: |
TESTOB
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Doctoral Director(s:) |
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM Sheng-Ying (Margaret) Lo, PhD, DABCC |
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| Review Date: | 12/14/2022 | |