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An Isotope Dilution-Liquid Chromatography-Tandem Mass Spectrometry-Based Candidate Reference Measurement Procedure for the Quantification of 5-Alpha-Dihydrotestosterone in Human Serum and Plasma

research An isotope dilution-liquid chromatography-tandem mass spectrometry-based candidate reference measurement procedure for the quantification of 5-alpha-dihydrotestosterone in human serum and plasma

January 2026 in “Clinical Chemistry and Laboratory Medicine (CCLM)”

This study reported high analytical performance of an RMP for DHT quantification, with the ability to differentiate between 5α-DHT and 5β-DHT isomers, making it suitable for routine assay standardization and clinical sample evaluation.

The Effect of Finasteride, a 5 Alpha-Reductase Inhibitor, on Scalp Skin Testosterone and Dihydrotestosterone Concentrations in Patients with Male Pattern Baldness

research The effect of finasteride, a 5 alpha-reductase inhibitor, on scalp skin testosterone and dihydrotestosterone concentrations in patients with male pattern baldness.

59 citations , September 1994 in “The Journal of Clinical Endocrinology and Metabolism”

This study found that 4 weeks of finasteride treatment significantly decreased DHT levels in bald scalp to levels similar to hair-containing scalp in men with male pattern baldness.

research Comparative Efficacy of Oral and Topical 5-Alpha Reductase Inhibitors in Reducing Dihydrotestosterone levels across Men with Androgenetic Alopecia: A Network Meta-Analysis incorporating Post-Hoc Analyses of Randomized Clinical Trial Data

January 2026 in “Open Science Framework”

In this study, network meta-analyses were used to explore the ranking of various 5-alpha reductase inhibitor regimens on reducing dihydrotestosterone levels and to investigate whether this reduction correlates with increased total hair density in male androgenetic alopecia.

research Sexual dimorphism of growth plate prehypertrophic and hypertrophic chondrocytes in response to testosterone requires metabolism to dihydrotestosterone (DHT) by steroid 5‐alpha reductase type 1

27 citations , February 2005 in “Journal of Cellular Biochemistry”

This study found that rat male costochondral chondrocytes, unlike female chondrocytes, respond to testosterone through metabolism to dihydrotestosterone, which shows a maturation-state dependent effect in male growth plate cells.

Effect of MK-386, a Novel Inhibitor of Type 1 5 Alpha-Reductase, Alone and in Combination with Finasteride, on Serum Dihydrotestosterone Concentrations in Men

research Effect of MK-386, a novel inhibitor of type 1 5 alpha-reductase, alone and in combination with finasteride, on serum dihydrotestosterone concentrations in men.

6 citations , August 1996 in “The Journal of Clinical Endocrinology and Metabolism”

MK-386 and finasteride together effectively reduce DHT levels, potentially treating acne and male pattern baldness.

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Community Join

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community Did anybody use beta sisterol for hair loss? I saw in many articles in the internet that said that beta sisterol blocks dht by inhibiting 5a reductase type 2 enzyme and some reviews of people who said that it worked better than saw palmetto in terms of stoping hair loss and helping prostate.

in Research/Science 9 upvotes 3 years ago

Beta-sitosterol may inhibit 5-alpha reductase type 2 enzyme, potentially reducing DHT levels and promoting hair growth, similar to finasteride but possibly with fewer side effects. Its effectiveness and side effects compared to other treatments like saw palmetto and finasteride remain uncertain due to limited research.

community Alternatives/unorthodox hairloss protocols to the big three

in Chat 1 upvotes 7 months ago

The conversation discusses alternative and unorthodox hair loss treatments, including RU58841, nandrolone, and dianabol, as well as theoretical approaches involving high doses of estrogen and selective estrogen receptor modulators. These methods are considered extreme and potentially harmful but are explored for those unable to tolerate traditional 5-alpha reductase inhibitors.

community 5 years post hair transplant, 3 months on minoxidil only

326 upvotes 8 months ago

The user had a hair transplant five years ago and started using minoxidil three months ago. Commenters recommend adding finasteride or other DHT blockers to prevent further hair loss and maintain results.

community Androgenetic alopecia is a skin disease: DHT-mediated skin disorders

63 upvotes 2 years ago

Dihydrotestosterone (DHT) impacts various skin conditions, including Androgenetic alopecia and seborrheic dermatitis, by causing overactivity in sebaceous glands. Topical medications Tacrolimus and Clobetasol can reduce these inflammatory conditions, and treatments like RU58841, Minoxidil, and Finasteride may also be beneficial.

community Does Creatine Cause Hair Loss? I Did the Science.

6 upvotes 1 year ago

Creatine at 2.5 g/day did not affect DHT levels in the user, suggesting it may not cause hair loss through DHT. The user used minoxidil during the experiment but did not use finasteride or other DHT-reducing medications.

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Learn

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learn Finasteride

Frontline, gold standard treatment for combatting androgenic alopecia

learn Saw Palmetto

a natural and far less effective alternative to Finasteride

learn Azelaic Acid

acid used for antimicrobial, anti-inflammatory and anti-androgenic properties

learn Rosemary

herb and oil with stimulant, circulatory, anti-inflammatory and antioxidant properties

learn Overview

learn procapil

Want to stop hormonal hair loss without touching your hormone levels? Procapil could block the enzyme doing the damage. Procapil's supplier describes it as inhibiting 5-alpha reductase at the scalp without changing hormone levels, but the published support is cell and animal work plus one small human study of a caffeine-plus-Procapil formula. It is a cosmetic ingredient, not an approved hair-loss treatment, and no trial has compared it with finasteride or minoxidil.

learn Fluridil

How is Fluridil different from other DHT blockers like finasteride? Fluridil is a topical androgen-receptor blocker applied to the scalp, while finasteride is an oral 5-alpha-reductase inhibitor that lowers DHT throughout the body. Finasteride is FDA-approved and far better studied; Fluridil rests on one 43-man trial and is not licensed as a hair-loss medicine, so its long-term safety and effect size are unknown.

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