LpX is a lipoprotein formed in cholestatic conditions and often erroneously reported as LDL-C. A low ApoB level can support the diagnosis of LpX. Treatment should not automatically focus on lowering serum lipid levels, but primarily on resolving the cause of cholestasis. (Level of Difficulty: Advanced.).
Keywords: ApoB, apolipoprotein B; HDL, high-density lipoprotein; HDL-C, high-density lipoprotein cholesterol; LDL, low-density lipoprotein; LDL-C, low-density lipoprotein cholesterol; LpX, lipoprotein X; TC, total cholesterol; VLDL, very-low-density lipoprotein; apolipoprotein B; cholestasis; hypercholesterolemia; lipoprotein X.
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