ArticleJACC. Case reports2026
Severe Hypertriglyceridemia With Lipemia-Induced Analytical Interference: Diagnostic Challenges in a Chylomicronemia Phenotype.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSevere hypertriglyceridemia can cause significant metabolic complications and spurious laboratory results, complicating clinical decision-making. Chylomicronemia syndromes, particularly multifactorial forms, are underrecognized, and may present with both pancreatitis and premature atherosclerotic cardiovascular disease. CASE SUMMARY: A 51-year-old man with diabetes and hypertension presented with chest pain and recent hypertriglyceridemia-induced normoenzymatic pancreatitis. Ischemic electrocardiographic changes prompted coronary angiography. Preprocedural testing showed a prothrombin time reported as "infinite" (no clot detected). Serum appeared grossly lipemic (triglycerides 4,038 mg/dL) with a creamy supernatant after centrifugation. Mixing study revealed normal coagulation parameters, confirming analytical interference rather than true coagulopathy. The combination of severe hypertriglyceridemia, relatively preserved apolipoprotein B, and multisystem manifestations favored a chylomicronemia phenotype (type IV-V spectrum). Coronary angiography confirmed obstructive disease, and following triglyceride-lowering therapies, successful percutaneous coronary angioplasty was performed. DISCUSSION: This case highlights the multisystem impact of severe hypertriglyceridemia and the importance of recognizing lipemia-related laboratory artifacts to avoid misdiagnosis and enable timely management. TAKE-HOME MESSAGES: Severe hypertriglyceridemia reflects a spectrum of triglyceride-rich lipoprotein disorders, often with combined chylomicron and very-low-density lipoproteins excess due to genetic-environmental interactions. Lipemia, associated with severe hypertriglyceridemia, may interfere with routine laboratory assays, leading to spurious results posing significant diagnostic and therapeutic challenges.
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