Research

Hormonal

Circulating PCSK9 exhibits a diurnal rhythm that parallels cholesterol synthesis (measured by lathosterol) but does not correlate with stable serum LDL levels.

PCSK9 levels fluctuate throughout the day in sync with how much cholesterol your liver is making, not necessarily with the amount of LDL in your blood. This means PCSK9 is a marker of liver cholesterol synthesis activity, not a direct predictor of your circulating LDL levels.

GoodQualifiesHIGH confidence
serum PCSK9 levels display a diurnal rhythm that closely parallels that of cholesterol synthesis, measured as serum lathosterol... serum low-density lipoprotein (LDL) cholesterol levels remained stable during the diurnal cycle.
Lena Persson et al. · Arteriosclerosis Thrombosis and Vascular Biology · 2010

Why this rating

Consistent findings across multiple subjects and time points.

Source

Circulating Proprotein Convertase Subtilisin Kexin Type 9 Has a Diurnal Rhythm Synchronous With Cholesterol Synthesis and Is Reduced by Fasting in Humans

Lena Persson et al. · Arteriosclerosis Thrombosis and Vascular Biology · 2010

DOI 10.1161/atvbaha.110.214130

crossover · n=90Cited 171×
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DOI resolved against Crossref · corpus check 2026-06-10

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