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Lipid Panel

Triglycerides

Normal range < 150 normal mg/dL (< 1.7 normal mmol/L SI). Specimen: Serum (fasting 9–12 h).

Also known as: TG, trigs.

< 150 normal mg/dLCritical: read below

Reference range

This result is reported qualitatively or as a one-sided threshold rather than a two-sided numeric band.

SpecimenSerum (fasting 9–12 h)
Conventional range< 150 normal mg/dL
SI range< 1.7 normal mmol/L
Conversion factor×0.0113 (conventional → SI)
Critical value> 500 mg/dL raises pancreatitis risk
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Convert any Triglycerides result between units on the unit converter.

What is the normal range for Triglycerides?

The standard teaching reference range for Triglycerides is < 150 normal mg/dL in conventional units, or < 1.7 normal mmol/L in SI units. This value is measured in serum (fasting 9–12 h).

A commonly taught critical (panic) value is > 500 mg/dL raises pancreatitis risk. Critical results are reported to the provider immediately under your facility's policy.

Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population — always use the range printed on the actual result.

Above the range

Common causes of a high Triglycerides

  • Poorly controlled diabetes
  • Obesity and high-carbohydrate diet
  • Alcohol
  • Hypothyroidism

Below the range

Common causes of a low Triglycerides

  • Malnutrition
  • Hyperthyroidism

At the bedside

Nursing considerations

  • Requires a true 9–12 hour fast; a recent meal falsely elevates it.
  • Very high levels can trigger acute pancreatitis.

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