<unk>  (also known as hypolipidemia or low lipoproteins) is defined as presence of low levels of one or more type of lipoproteins.<unk>  may present as primary genetic disorders or as a secondary complication of underlying medical conditions. After ruling out common secondary causes of<unk> , the clinician must begin the work-up for primary causes.
Patients with hypoproteinemia may present with low LDL, or low HDL. Patients with low LDL commonly present with diarrhea, vomiting, or failure to thrive (in infanthood). Patients with primary low HDL are usually asymptomatic however, patients diagnosed with low HDL due to Tangier's disease, ApoA1 deficiency, or LCAT deficiency have specific clinical findings such as corneal opacities, xanthomas, and renal failure. Work up for primary<unk> s begins with careful examination of the lipid panel and may involve screening of family members. Confirmatory gene sequencing is the gold standard diagnostic test for all<unk> s.
Hypolipoproteinemia
Hypertriglyceridemia
Dyslipidemia
Lipiduria
Hyperlipoproteinemia
Hypobetalipoproteinemia
VLDL hyperlipidemia
Xanthinuria