Effect of cosmetic hair treatment and natural hair colour on hair testosterone concentrations.

ABSTRACT:

Purpose

Testosterone analysis in hair allows for retrospective evaluation of endogenous testosterone concentrations, but studies devoted to investigating confounders in hair testosterone analysis have hitherto been scarce. The current study examined the stability of testosterone concentrations between two hair samples collected three months apart and investigated two potential confounding factors: natural hair colour and cosmetic hair treatments.

Methods

Testosterone was analysed with an in-house radioimmunoassay with a limit of detection adequate for the purpose.

Results

The testosterone concentrations from the two samplings, at baseline and three months later, had an intra-individual correlation of moderate strength (rho = 0.378, p<0.001, n = 146). Hair treatment, s

SUBMITTER: Preinbergs JK 

PROVIDER: S-EPMC10566713 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature