MICHIGAN INNOVATIVE DIAGNOSTICS

Measures the total circulating Testosterone (bound and unbound), used to evaluate hypogonadism, hyperandrogenism, and overall androgen status.

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LIS TEST CODE: TESTO

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CPT CODE: 84403

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ALIASES: TESTO, TGRP

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METHODOLOGY: Chemiluminescent Microparticle Immunoassay (CMIA)

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SPECIMEN:

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- Type: Serum

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- Container: Gold Top (SST) Vacutainer

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- Minimum Volume Required: 1 mL

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- Storage/Handling: Allow 30 minutes for blood to clot, then centrifuge specimen at 3500 RPM for 10 minutes. Maintain specimen at room temperature or in the refrigerator until testing can be performed.

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- Stability:     

 

Room Temperature (20-25 °C): 8 hours

Refrigerated (2-8 °C): 7 days

Frozen (-20 °C or colder): Not Accepted

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- Turnaround Time: 24 hours from receipt.

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Special Instructions: Remove serum from separator gel and transfer into a plastic screw-cap aliquot tube as soon as possible after complete clot formation.

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REJECTION REASONS: QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

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REFERENCE RANGES:

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Males (ng/dL)

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1 - 9 years of age: 7.00 - 20.00

10 - 11 years of age: 7.00 - 130.00

12 - 13 years of age: 7.00 - 800.00

14 years of age: 7.00 - 1200.00

15 - 16 years of age: 10.00 - 1200.00

17 - 18 years of age: 300.00 - 1200.00

>= 19 years of age: 240.00 - 950.00

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Females (ng/dL)

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1 - 9 years of age: 7.00 - 20.00

10 - 11 years of age: 7.00 - 44.00

12 - 16 years of age: 7.00 - 75.00

17 - 18 years of age: 20.00 - 75.00

>= 19 years of age: 8.00 - 60.00​​

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