Plasma glycerol levels in men with hypertriglyceridemia

Research output: Contribution to journalJournal articlepeer-review

When plasma triglyceride is assessed in standard laboratories, it is a measurement of plasma glycerol after hydrolysis of triglycerides into fatty acids and glycerol. In most patients, the plasma level of free glycerol will only marginally influence the measurement of plasma triglyceride. However, in rare cases elevated free glycerol concentrations causes pseudohypertriglyceridemia and blanking for free glycerol becomes important. In this study, we investigated the plasma free glycerol level in 100 adult men with mild to moderate hypertriglyceridemia to assess the need for providing a free glycerol measurement in our clinical biochemistry department. The plasma samples were obtained in our blood sampling facility that receives both in- and outpatients. The highest plasma level of free glycerol observed was 300 µmol/L and in 99% of the investigated men the inclusion of plasma free glycerol in the measurement of plasma triglyceride cause a less than 10% false increase in plasma triglyceride. A weak positive correlation between the plasma levels of free glycerol and triglyceride was observed. When subdividing the cohort into mild and moderate hypertriglyceridemia, the positive correlation was only maintained in the moderate hypertriglyceridemia group that also demonstrated a 23% higher plasma glycerol level than men with mild hypertriglyceridemia. We conclude that even though glycerol blanking is relevant in rare occasions, then this study does not support providing such a measurement in our department. The positive correlation between free glycerol and triglyceride in this cohort likely reflects a shared association with metabolic dysregulation.

Original languageEnglish
Book seriesScandinavian Journal of Clinical and Laboratory Investigation
Issue number4
Pages (from-to)298-302
Publication statusPublished - 2021

Bibliographical note

Publisher Copyright:
© 2021 Medisinsk Fysiologisk Forenings Forlag (MFFF).

    Research areas

  • Glycerol, glycerol kinase, hypertriglyceridemia, medical biochemistry, spectrophotometry

ID: 304871161