Martin H. Keppel

Graz, Austria

Last Updated: 09/26/2026

Save publications for later

Sign Up

Not sure about your diagnosis?

Check Your Symptoms

Found 32 publications

Vitamin K status has no influence on the effect of vitamin D supplementation on bone turnover and cardiovascular markers: a randomized controlled trial.

Vitamin K status has no influence on the effect of vitamin D supplementation on bone turnover and cardiovascular markers: a randomized controlled trial.

Journal: Frontiers in nutrition

Published: April 16, 2026

The role of functional vitamin D deficiency and low vitamin D reservoirs in relation to cardiovascular health and mortality.

The role of functional vitamin D deficiency and low vitamin D reservoirs in relation to cardiovascular health and mortality.

Journal: Clinical chemistry and laboratory medicine

Published: March 28, 2024

Classification of Vitamin D Status Based on Vitamin D Metabolism: A Randomized Controlled Trial in Hypertensive Patients.

Classification of Vitamin D Status Based on Vitamin D Metabolism: A Randomized Controlled Trial in Hypertensive Patients.

Journal: Nutrients

Published: February 23, 2024

Determinants of circulating calcitriol in cardiovascular disease.

Determinants of circulating calcitriol in cardiovascular disease.

Journal: The Journal of steroid biochemistry and molecular biology

Published: January 05, 2024

Vitamin D and vitamin K status in postmenopausal women with normal and low bone mineral density.

Vitamin D and vitamin K status in postmenopausal women with normal and low bone mineral density.

Journal: Clinical chemistry and laboratory medicine

Published: October 27, 2023

Functional Assessment of Vitamin D Status by a Novel Metabolic Approach: The Low Vitamin D Profile Concept.

Functional Assessment of Vitamin D Status by a Novel Metabolic Approach: The Low Vitamin D Profile Concept.

Journal: Clinical chemistry

Published: May 24, 2023

Associations of Parameters of the Tryptophan-Kynurenine Pathway with Cardiovascular Risk Factors in Hypertensive Patients.

Associations of Parameters of the Tryptophan-Kynurenine Pathway with Cardiovascular Risk Factors in Hypertensive Patients.

Journal: Nutrients

Published: November 26, 2022

Acidification of 24-hour urine in urolithiasis risk testing: An obsolete relic?

Acidification of 24-hour urine in urolithiasis risk testing: An obsolete relic?

Journal: Clinica chimica acta; international journal of clinical chemistry

Published: April 07, 2022

Efficiency, efficacy and subjective user satisfaction of alternative laboratory report formats. An investigation on behalf of the Working Group for Postanalytical Phase (WG-POST), of the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM).

Efficiency, efficacy and subjective user satisfaction of alternative laboratory report formats. An investigation on behalf of the Working Group for Postanalytical Phase (WG-POST), of the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM).

Journal: Clinical chemistry and laboratory medicine

Published: March 21, 2022

Effects of Vitamin D Supplementation on 24-Hour Blood Pressure in Patients with Low 25-Hydroxyvitamin D Levels: A Randomized Controlled Trial.

Effects of Vitamin D Supplementation on 24-Hour Blood Pressure in Patients with Low 25-Hydroxyvitamin D Levels: A Randomized Controlled Trial.

Journal: Nutrients

Published: February 02, 2022

Diagnostic Workup of Microcytic Anemia: An Evaluation of Underuse or Misuse of Laboratory Testing in a Hospital Setting Using the AlinIQ System.

Diagnostic Workup of Microcytic Anemia: An Evaluation of Underuse or Misuse of Laboratory Testing in a Hospital Setting Using the AlinIQ System.

Journal: Archives of pathology & laboratory medicine

Published: November 19, 2021

Randomized trial of vitamin D versus placebo supplementation on markers of systemic inflammation in hypertensive patients.

Randomized trial of vitamin D versus placebo supplementation on markers of systemic inflammation in hypertensive patients.

Journal: Nutrition, metabolism, and cardiovascular diseases : NMCD

Published: June 21, 2021

Showing 1-12 of 32

Last Updated: 09/26/2026