Which tests measure Testosterone-to-Progesterone Ratio?

Testosterone-to-Progesterone Ratio is measured in 1 test on BiomarkersLabs.com, including Blood Spot LCMS Hormones 7 with SHBG.

Biomarker Reference · T/P4

What does the Testosterone-to-Progesterone Ratio test measure?

Q: Why is Testosterone-to-Progesterone Ratio measured?

The T/P4 ratio is not a standard diagnostic criterion but is used by some practitioners as an adjunct to traditional measures of androgen excess and ovulatory function. It should be interpreted alongside absolute testosterone, progesterone, LH, and clinical features rather than in isolation.

Q: What is the reference range for Testosterone-to-Progesterone Ratio?

The standard reference range for Testosterone-to-Progesterone Ratio is No universally accepted reference range; luteal-phase T/P4 <1.0 is sometimes used in functional interpretation of PCOS.. Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Testosterone-to-Progesterone Ratio (T/P4) is a clinical biomarker used in male-hormones assessment. The testosterone-to-progesterone ratio is a calculated index that reflects the balance between androgenic and progestogenic activity. It is measured in 1 laboratory test on BiomarkersLabs.com.

Reference Range: No universally accepted reference range; luteal-phase T/P4 <1.0 is sometimes used in functional interpretation of PCOS.
Units: ratio
Measured In: 1 test
Category: Male Hormones

Functional medicine optimalSuggested 'optimal' T/P4 ratios are not evidence-based; practitioners who use this marker typically flag ratios above 1.0 as potentially indicative of androgen dominance in the context of other supporting findings.

What is Testosterone-to-Progesterone Ratio?

The testosterone-to-progesterone ratio is a calculated index that reflects the balance between androgenic and progestogenic activity. In females a high T/P4 ratio during the luteal phase has been proposed as a marker of relative androgen excess in the setting of luteal insufficiency, a pattern sometimes seen in polycystic ovary syndrome.

Why is Testosterone-to-Progesterone Ratio measured?

The T/P4 ratio is not a standard diagnostic criterion but is used by some practitioners as an adjunct to traditional measures of androgen excess and ovulatory function. It should be interpreted alongside absolute testosterone, progesterone, LH, and clinical features rather than in isolation.

Reference ranges

Standard reference: No universally accepted reference range; luteal-phase T/P4 <1.0 is sometimes used in functional interpretation of PCOS.
Functional medicine optimal: Suggested 'optimal' T/P4 ratios are not evidence-based; practitioners who use this marker typically flag ratios above 1.0 as potentially indicative of androgen dominance in the context of other supporting findings.
Units: ratio

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Testosterone-to-Progesterone Ratio

1 test on BiomarkersLabs.com include this biomarker.

BML-HRM-016Comprehensive

Blood Spot LCMS Hormones 7 with SHBG

Testosterone-to-Progesterone Ratio reference range in this test: No universally accepted reference range; luteal-phase T/P4 <1.0 is sometimes used in functional interpretation of PCOS.

Related clinical conditions

Related Biomarkers

Frequently measured alongside

TestosteroneT1 test OestradiolE21 test ProgesteroneP41 test DehydroepiandrosteroneDHEA1 test CortisolCort1 test CortisoneE1 test Sex Hormone-Binding GlobulinSHBG1 test

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