Literature DB >> 26324959

PURLS: It's time to reconsider early-morning testosterone tests.

Natalie Long1, Liz Nguyen2, James Stevermer1.   

Abstract

Guidelines recommend collecting an early-morning sample to compensate for the natural diurnal variation in testosterone levels. But for men 45 and older, this is unnecessary. Because the natural diurnal variation in testosterone levels tends to diminish with age, it is acceptable to test men ages 45 and older before 2 pm.

Entities:  

Mesh：

Substances：

Year:  2015        PMID： 26324959      PMCID： PMC4501456     

Source DB:  PubMed          Journal:  J Fam Pract        ISSN： 0094-3509            Impact factor:   0.493


  6 in total

Review 1.  Testosterone therapy in men with androgen deficiency syndromes: an Endocrine Society clinical practice guideline.

Authors:  Shalender Bhasin; Glenn R Cunningham; Frances J Hayes; Alvin M Matsumoto; Peter J Snyder; Ronald S Swerdloff; Victor M Montori
Journal:  J Clin Endocrinol Metab       Date:  2010-06       Impact factor: 5.958

2.  Loss of circadian rhythmicity in blood testosterone levels with aging in normal men.

Authors:  W J Bremner; M V Vitiello; P N Prinz
Journal:  J Clin Endocrinol Metab       Date:  1983-06       Impact factor: 5.958

3.  The effect of diurnal variation on clinical measurement of serum testosterone and other sex hormone levels in men.

Authors:  Donald J Brambilla; Alvin M Matsumoto; Andre B Araujo; John B McKinlay
Journal:  J Clin Endocrinol Metab       Date:  2008-12-16       Impact factor: 5.958

4.  Validity of midday total testosterone levels in older men with erectile dysfunction.

Authors:  R Charles Welliver; Herbert J Wiser; Robert E Brannigan; Kendall Feia; Manoj Monga; Tobias S Köhler
Journal:  J Urol       Date:  2014-02-08       Impact factor: 7.450

5.  The association of time of day and serum testosterone concentration in a large screening population.

Authors:  E David Crawford; Al Baha Barqawi; Colin O'Donnell; Abraham Morgentaler
Journal:  BJU Int       Date:  2007-06-06       Impact factor: 5.588

6.  Circadian variation in serum free and non-SHBG-bound testosterone in normal men: measurements, and simulation using a mass action model.

Authors:  R R Cooke; J E McIntosh; R P McIntosh
Journal:  Clin Endocrinol (Oxf)       Date:  1993-08       Impact factor: 3.478
  6 in total
  4 in total

1.  Sleep restriction and testosterone concentrations in young healthy males: randomized controlled studies of acute and chronic short sleep.

Authors:  Isaac Smith; Ismel Salazar; Arindam RoyChoudhury; Marie-Pierre St-Onge
Journal:  Sleep Health       Date:  2019-08-12

2.  Role of HPA and the HPG Axis Interaction in Testosterone-Mediated Learned Helpless Behavior.

Authors:  Birgit Ludwig; Bhaskar Roy; Yogesh Dwivedi
Journal:  Mol Neurobiol       Date:  2018-04-28       Impact factor: 5.590

3.  The Influence of Steroid Hormones on Tooth Wear in Children and in Adolescents.

Authors:  Jeanette Buchhardt; Wieland Kiess; Antje Körner; Ronald Biemann; Christian Hirsch; Life Child Study Team
Journal:  J Clin Med       Date:  2022-06-22       Impact factor: 4.964

Review 4.  Hormone Immunoassay Interference: A 2021 Update.

Authors:  Khaldoun Ghazal; Severine Brabant; Dominique Prie; Marie-Liesse Piketty
Journal:  Ann Lab Med       Date:  2022-01-01       Impact factor: 3.464
  4 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.