Increased levels of which lipoprotein lead to a turbid infranate?

Increased levels of VLDL (very low-density lipoprotein) lead to a turbid infranate due to the high concentration of triglycerides that these lipoproteins carry. When VLDL is elevated, it is often due to conditions such as hyperlipidemia or metabolic syndrome, where the body has excess triglycerides in the bloodstream.

The presence of high levels of VLDL causes the bloodstream to become rich in lipids, which can affect the separation of blood components during centrifugation, resulting in a turbid or cloudy infranate. This is because VLDL is lighter compared to other lipoproteins, such as LDL (low-density lipoprotein) and HDL (high-density lipoprotein).

Chylomicrons also can lead to turbidity, but their role is more pronounced in the postprandial state rather than in a fasting state where VLDL is typically the prominent lipoprotein responsible for increased turbidity. Understanding this physiological response in lipid metabolism is crucial when analyzing lipid profiles and managing conditions associated with dyslipidemia.