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Testosterone, Total, Adult Males

Mnemonic

TEST

Guidelines

Perform on males ≥ 16 years only. For females and males <16 years old, order Testosterone, Total, Females or Children.

For specific testing guidelines please refer to: SHBG and Free/Total Testosterone Methods

Specimen Collection Requirements

Patient Preparation

Morning specimen collected between 6-10 AM is preferred.

Collect

Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube

Supply Item Number - 101235 or 101192

Handling

Allow serum to clot completely at room temperature (minimum - SST: 30 minutes and red top tubes: 60 minutes). Centrifuge and separate serum and plasma from cells ASAP.

Preferred Volume

1.0 mL Serum

Minimum Volume

0.3 mL Serum (0.8 mL minimum whole blood draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed or plasma specimens

Stability

AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 48 hours; Refrigerated (2-8°C): 7 days; Frozen (≤ -20°C): 2 months.

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Chemiluminescent Immunoassay

Reference Values

Reference Values

AGE

MALE

16 Years

220 - 800 ng/dL

≥17 Years

241 - 827 ng/dL


CPT Codes

84403

Last Updated: Thursday, February 11, 2021 08:21:23 PM


Client Services: 503-413-1234