Renaud Gonthier

Quebec, QC, Canada

Last Updated: 09/26/2026

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Found 22 publications

Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions.

Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions.

Journal: Analytical and bioanalytical chemistry

Published: August 23, 2021

Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays - impact of 3-epi-25-hydroxyvitamin D3 on assay performance.

Interlaboratory comparison of 25-hydroxyvitamin D assays: Vitamin D Standardization Program (VDSP) Intercomparison Study 2 - Part 1 liquid chromatography - tandem mass spectrometry (LC-MS/MS) assays - impact of 3-epi-25-hydroxyvitamin D3 on assay performance.

Journal: Analytical and bioanalytical chemistry

Published: May 29, 2021

Assessment of serum total 25-hydroxyvitamin D assay commutability of Standard Reference Materials and College of American Pathologists Accuracy-Based Vitamin D (ABVD) Scheme and Vitamin D External Quality Assessment Scheme (DEQAS) materials: Vitamin D Standardization Program (VDSP) Commutability Study 2.

Assessment of serum total 25-hydroxyvitamin D assay commutability of Standard Reference Materials and College of American Pathologists Accuracy-Based Vitamin D (ABVD) Scheme and Vitamin D External Quality Assessment Scheme (DEQAS) materials: Vitamin D Standardization Program (VDSP) Commutability Study 2.

Journal: Analytical and bioanalytical chemistry

Published: April 06, 2021

In Reply.

In Reply.

Journal: Menopause (New York, N.Y.)

Published: July 06, 2018

Concentration range of serum sex steroids in normal postmenopausal women and those with diagnosis of vulvovaginal atrophy.

Concentration range of serum sex steroids in normal postmenopausal women and those with diagnosis of vulvovaginal atrophy.

Journal: Menopause (New York, N.Y.)

Published: December 06, 2017

Evaluation of a one-step sample preparation protocol for analysis of total serum testosterone by LC-MS/MS.

Evaluation of a one-step sample preparation protocol for analysis of total serum testosterone by LC-MS/MS.

Journal: Clinical mass spectrometry (Del Mar, Calif.)

Published: September 12, 2017

Impact of sample extraction on the accurate measurement of progesterone in human serum by liquid chromatography tandem mass spectrometry.

Impact of sample extraction on the accurate measurement of progesterone in human serum by liquid chromatography tandem mass spectrometry.

Journal: Journal of chromatography. B, Analytical technologies in the biomedical and life sciences

Published: December 01, 2016

A sensitive and accurate LC-MS/MS assay with the derivatization of 1-Amino-4-methylpiperazine applied to serum allopregnanolone, pregnenolone and androsterone in pre- and postmenopausal women.

A sensitive and accurate LC-MS/MS assay with the derivatization of 1-Amino-4-methylpiperazine applied to serum allopregnanolone, pregnenolone and androsterone in pre- and postmenopausal women.

Journal: Steroids

Published: October 13, 2016

Characteristics of Men Who Report Persistent Sexual Symptoms After Finasteride Use for Hair Loss.

Characteristics of Men Who Report Persistent Sexual Symptoms After Finasteride Use for Hair Loss.

Journal: The Journal of clinical endocrinology and metabolism

Published: September 24, 2016

Corrigendum to "A sensitive, simple and robust LC-MS/MS method for the simultaneous quantification of seven androgen- and estrogen-related steroids in postmenopausal serum" [J. Steroid Biochem. Mol. Biol. 144 (2014) 523-534].

Corrigendum to "A sensitive, simple and robust LC-MS/MS method for the simultaneous quantification of seven androgen- and estrogen-related steroids in postmenopausal serum" [J. Steroid Biochem. Mol. Biol. 144 (2014) 523-534].

Journal: The Journal of steroid biochemistry and molecular biology

Published: April 01, 2016

Serum steroid concentrations remain within normal postmenopausal values in women receiving daily 6.5mg intravaginal prasterone for 12 weeks.

Serum steroid concentrations remain within normal postmenopausal values in women receiving daily 6.5mg intravaginal prasterone for 12 weeks.

Journal: The Journal of steroid biochemistry and molecular biology

Published: December 10, 2015

Letter to the Editor: Superior Mass Spectrometry-Based Estrogen Assays Should Replace Immunoassays.

Letter to the Editor: Superior Mass Spectrometry-Based Estrogen Assays Should Replace Immunoassays.

Journal: The Journal of clinical endocrinology and metabolism

Published: September 05, 2015

Showing 1-12 of 22

Last Updated: 09/26/2026