Intraindividual stability of cortisol and cortisone and the ratio of cortisol to cortisone in saliva, urine and hair

Steroids. 2017 Feb:118:61-67. doi: 10.1016/j.steroids.2016.12.008. Epub 2016 Dec 18.

Abstract

Background: Cortisol, cortisone and the ratio of cortisol to cortisone in saliva, urine and hair are acute, short-term and long-term biomarkers to reliably assess the activity of hypothalamic-pituitary-adrenal (HPA) axis and 11β-hydroxysteroid dehydrogenase (11β-HSD). One key issue is whether these biomarkers have intraindividual relative stability. Salivary, urinary and hair cortisol was proven to show considerable long-term intraindividual relative stability. However, currently unknown is whether cortisone and the ratio in saliva, urine and hair show intraindividual relative stability.

Methods: The present study utilized a longitudinal design to validate long-term stability within two weeks of three biomarkers in saliva and urine, and long-term stability within twelve months of three hair biomarkers. Salivary, urinary and hair steroids were measured with high performance liquid chromatography tandem mass spectrometry.

Results: Three biomarkers in urine and hair showed moderate test-retest correlations with coefficient (r) ranging between 0.22 and 0.56 and good multiple-test consistencies with coefficient of intraclass correlation (ICC) ranging between 0.42 and 0.67. Three single-point salivary biomarkers showed weak to moderate test-retest correlations (r's between 0.01 and 0.38) and poor to fair multiple-test consistencies (ICC's between 0.29 and 0.53) within two weeks. Three single-day salivary biomarkers showed moderate test-retest correlations (r's between 0.23 and 0.53) and good multiple-test consistencies (ICC's between 0.56 and 0.66) within two weeks.

Conclusions: Three biomarkers in urine and hair showed moderate long-term intraindividual relative stability. Three single-point salivary biomarkers showed weak to moderate short-term and long-term intraindividual relative stability, but three single-day salivary biomarkers showed moderate short-term and long-term intraindividual relative stability.

Keywords: 11β-Hydroxysteroid dehydrogenase; Cortisol; Cortisone; Intraindividual stability; Tandem mass spectrometry; The ratio of cortisol to cortisone.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Biomarkers / analysis*
  • Biomarkers / urine*
  • Chromatography, High Pressure Liquid
  • Cortisone / analysis*
  • Cortisone / urine*
  • Female
  • Hair / chemistry*
  • Humans
  • Hydrocortisone / analysis*
  • Hydrocortisone / urine*
  • Male
  • Saliva / chemistry*
  • Tandem Mass Spectrometry
  • Young Adult

Substances

  • Biomarkers
  • Cortisone
  • Hydrocortisone