MyHealth

Manage your account, request prescriptions, set up appointments & more.

LOG IN
Don't have an account
Contact Us

TESTOSTERONE, FREE AND TOTAL (WITH SHBG), FEMALES OR CHILDREN

Mnemonic

TESTOS FT

Includes

Free Testosterone, Total Testosterone, Sex Hormone Binding Globulin

Guidelines

Perform on females of all ages and males < 16 years old. For adult males, order Testosterone, Free and Total, Adult Males.

Specimen Collection Requirements

Patient Preparation

Morning specimen collected between 6-10 AM is preferred.

Collect

Serum or Plasma, one 5.0 mL gold (SST), 3.0 mL mint green (lithium heparin, PST), or dark green (sodium heparin) top tube

Supply Item Number - 101235

Handling

Allow serum to clot completely at room temperature (minimum - SST: 30 minutes). Centrifuge and separate serum and plasma from cells ASAP or within 2 hours of collection. Transfer 1.0 mL serum or plasma to an aliquot tube.

Preferred Volume

1.0 mL Serum/Plasma

Minimum Volume

0.8 mL Serum/Plasma (1.8 mL minimum whole blood draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

EDTA plasma

Stability

AFTER SEPARATION FROM CELLS: Ambient (18-26°C): 24 hours; Refrigerated (2-8°C): 1 week; Frozen (< -20°C): 6 months

Testing Information

Performed

7 days/week

Reported

2-5 days

Method

Free Testosterone: Calculation from Total Testosterone and SHBG
Total Testosterone: LC/MS/MS
SHBG: Chemiluminescent Immunoassay

Referral Lab

ARUP (81056)

Reference Values

Reference Values

Interpretation provided.
Age related reference ranges.

Comments

The concentration of free testosterone is derived from a mathematical expression based on the constant for the binding of testosterone to SHBG.

CPT Codes

Total Testosterone: 84403, SHBG: 84270

Last Updated: Thursday, January 5, 2017 03:41:40 AM


Client Services: 503-413-1234