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Glossary Testosterone Levels

measure of testosterone concentration in the bloodstream

Testosterone levels refer to the concentration of testosterone, a key male sex hormone, in the bloodstream. These levels can influence various bodily functions, including muscle mass, bone density, and hair growth. Abnormal testosterone levels, whether too high or too low, can lead to health issues such as alopecia, infertility, and mood disorders. Measurement of testosterone levels is often done through blood tests to diagnose and manage conditions related to hormonal imbalances.

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Research

5 / 1000+ results

research The Effects of Single Testosterone Administration and Stress Induction on Steroid Hormone Levels in Hair

November 2024 in “Psychoneuroendocrinology”

This study found that hair steroid analysis effectively detected increased hormone levels from both a single testosterone dose and laboratory-induced stress, revealing individual context factors like relationship status also impact hair hormone concentrations.

research The Role of Vitamin D and Testosterone Levels with Hair Loss among Females with Coronavirus Disease

October 2025 in “Medical Journal of Babylon”

In this study, researchers found that female COVID-19 patients experiencing hair loss had higher testosterone levels and lower Vitamin D levels than healthy controls, suggesting these hormonal factors may play a role in post-COVID-19 hair loss.

research Hair removal in hirsute women with normal testosterone levels: a randomized controlled trial of long-pulsed diode laser vs. intense pulsed light

41 citations , September 2010 in “British journal of dermatology/British journal of dermatology, Supplement”

In this study, hirsute women with normal or medically normalized testosterone levels experienced similar, though declining, hair reduction from both intense pulsed light and long-pulsed diode laser treatments over six months.

research Serum levels of testosterone and dehydroepiandrosterone sulfate in females with acne and/or female pattern hair loss

December 2020 in “Journal of Skin and Sexually Transmitted Diseases”

This study found no significant correlation between serum testosterone or DHEAS levels and the severity of acne or FPHL in a localized female population, but noted most patients had low testosterone levels.

research Investigation Of Serum Level Of T4, TSH, Free Testosterone And Prolactin Hormones As Well As Alb And SHBG Proteins In Women With Hair Loss Vs. Those Without Hair Loss

May 2013 in “DOAJ (DOAJ: Directory of Open Access Journals)”

This study found that women with hair loss had significantly higher free testosterone levels compared to those without hair loss.

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Community Join

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community Testosterone and Estradiol levels on 1 mg/day dutasteride

43 upvotes 11 months ago

A 30-year-old man experienced significant hair regrowth and improved libido after using finasteride and dutasteride for androgenetic alopecia, with no adverse effects. He plans to reduce dutasteride dosage when trying to conceive and has been using topical minoxidil since 2015.

community I 2x my natural Testosterone levels and now I lose ground while on Finasteride, what next?

2 upvotes 2 years ago

The user is experiencing hair loss despite using finasteride and having increased testosterone levels. They are considering options like starting dutasteride, increasing finasteride dosage, or using supplements like astaxanthin and curcumin, while also using ketoconazole shampoo and microneedling.

community DHT levels and correlation to hair loss

in Chat 3 upvotes 11 months ago

The user experienced hair shedding after starting testosterone replacement therapy (TRT) and is considering using DHT blockers like finasteride or dutasteride to address potential DHT-related hair loss. Low ferritin levels due to frequent blood donations may also contribute to hair issues, and the user is working on stabilizing iron levels.

community Is it uncommon to not test for testosterone levels before taking fin?

12 upvotes 2 years ago

Doctors often prescribe finasteride for hair loss without testing testosterone levels. There is no need for such tests before starting the medication.

community My DHT levels on 1400mg testosterone per week and 0.5mg dutasteride daily

346 upvotes 2 months ago

A bodybuilder uses 1400mg testosterone weekly, 400mg equipoise, and GH, with 0.5mg dutasteride daily to stabilize hair loss and manage DHT levels. The user reports no side effects from dutasteride and finds it effective, while also discussing costs and effectiveness of other treatments like RU58841 and minoxidil.

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Learn

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learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Cyproterone

a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor

learn Finasteride

Frontline, gold standard treatment for combatting androgenic alopecia

learn Dutasteride

Heavy duty finasteride that comes with higher risks

learn Overview

learn Bicalutamide

Could bicalutamide help trans women regrow hair lost to testosterone? No study has tested bicalutamide for hair regrowth in trans women. In cisgender women the only randomized trial found it added nothing to minoxidil, and it is an off-label prescription drug that requires liver monitoring.

learn Ecklonia Cava

How does Ecklonia Cava help slow down hair loss in people with androgenetic alopecia? Ecklonia cava may slow hair loss by inhibiting the enzyme that converts testosterone to DHT.

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Clinics

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Experts

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Unscored
SMP Specialist
Hairo Fallas
Newark, NJ, United States

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Hairo Fallas