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GlossaryFree Androgen Index (FTI)

ratio estimating active testosterone in the bloodstream

The Free Androgen Index (FAI) is a ratio used to estimate the amount of active, or "free," testosterone in the bloodstream. It is calculated by dividing the total testosterone level by the sex hormone-binding globulin (SHBG) level and then multiplying by 100. This index is particularly useful in diagnosing conditions related to hormonal imbalances, such as polycystic ovary syndrome (PCOS) and certain types of alopecia.

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research The Analysis of Scalp Irritation by Coacervates Produced in Hair Shampoo via FTIR with Focal Plane Array Detector, X-ray Photoelectron Microscopy and HaCaT Cells

5 citations, August 2016 in “International Journal of Cosmetic Science”

Shampoo coacervates can cause scalp irritation due to released surfactants.

research Impact of Combined Baricitinib and FTI Treatment on Adipogenesis in Hutchinson-Gilford Progeria Syndrome and Other Lipodystrophic Laminopathies

4 citations, May 2023 in “Cells”

Baricitinib and its combination with lonafarnib improve fat cell formation in certain genetic disorders.

research Multidimensional Profiling of Human Body Hairs Using Qualitative and Semi-Quantitative Approaches with SR-XRF, ATR-FTIR, DSC, and SEM-EDX

2 citations, February 2023 in “International journal of molecular sciences”

Body hairs can be used in forensic science and toxicology like scalp hair.

research Metabolic Profiling by LC-DAD-MS, FTIR, NMR, and CE-UV of Polyphenols with Potential Against Skin Pigmentation Disorder

November 2021 in “Natural product research”

Certain polyphenols may help treat skin pigmentation disorders.

research Fourier Transform Infrared Attenuated Total Reflection Analysis of Human Hair: Comparison of Hair from Breast Cancer Patients with Hair from Healthy Subjects

42 citations, January 2005 in “Applied spectroscopy”

Hair from breast cancer patients shows changes in structure and composition, and a test using these changes detected cancer but also falsely identified some healthy samples as cancerous.

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