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Free Testosterone

Indications: Altered sex-hormone binding globulin (SHBG)
1. Low SHBG
2. High SHBG
  1. Older age patient
Normal Levels
1. Male: 100 to 680 pg/ml
2. Female: 3 to 22 pg/ml
Calculation of Testosterone Free Index (TFI)
1. TFI = (Total Testosterone / SHBG) x100

Free testosterone (C0443483)
Concepts	Steroid (T110) , Hormone (T125)
English	Free testosterone, Testosterone.free
Spanish	testosterona libre
Parent Concepts	Testosterone (C0039601)
Sources	LNC, SCTSPA, SNOMEDCT Derived from the NIH UMLS (Unified Medical Language System)

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This page was written by Scott Moses, MD. This page was last revised before 5/10/08, prior to consistent tracking of revision date. This page was last published on 6/1/2008. Please send comments and questions to the editor. Contact information may be found on the page About the Family Practice Notebook. These pages are best viewed with Microsoft Internet Explorer 6.0.

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Free Testosterone

Free testosterone (C0443483)

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