If the serum specimen appears opaque and milky (lipemic, from chylomicrons), the triglyceride level is:

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Multiple Choice

If the serum specimen appears opaque and milky (lipemic, from chylomicrons), the triglyceride level is:

Lipemic serum due to chylomicrons shows that there is a very large amount of triglyceride carried in the blood. Chylomicrons are the TG-rich lipoproteins responsible for the milky appearance, and their presence reflects substantial triglyceride elevation. In clinical practice, such marked lipemia corresponds to triglyceride levels around and above 600 mg/dL, which is why this scenario points to a value greater than 600 mg/dL. When triglycerides rise this high, common calculations for other lipids (like LDL cholesterol using Friedewald) become unreliable, and direct triglyceride measurement is typically required. In contrast, normal to moderately elevated triglycerides do not produce the same opaque, milky serum appearance.

Lipemic serum due to chylomicrons shows that there is a very large amount of triglyceride carried in the blood. Chylomicrons are the TG-rich lipoproteins responsible for the milky appearance, and their presence reflects substantial triglyceride elevation. In clinical practice, such marked lipemia corresponds to triglyceride levels around and above 600 mg/dL, which is why this scenario points to a value greater than 600 mg/dL. When triglycerides rise this high, common calculations for other lipids (like LDL cholesterol using Friedewald) become unreliable, and direct triglyceride measurement is typically required. In contrast, normal to moderately elevated triglycerides do not produce the same opaque, milky serum appearance.

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