All tests · Liver Function (LFTs)
Liver Function (LFTs)
Normal range 0.3-1.2 mg/dL (5.1-20.5 µmol/L SI). Specimen: Serum.
Also known as: Tbili, total bilirubin.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Bilirubin, Total; those can be narrower than the band shown.
| Specimen | Serum |
|---|---|
| Conventional range | 0.3-1.2 mg/dL |
| SI range | 5.1-20.5 µmol/L |
| Conversion factor | ×17.1 (conventional → SI) |
| Critical value | > 15 mg/dL in neonates (kernicterus risk) |
| Panel | Liver Function (LFTs) |
Convert any Bilirubin, Total result between units on the unit converter.
The standard teaching reference range for Bilirubin, Total is 0.3-1.2 mg/dL in conventional units, or 5.1-20.5 µmol/L in SI units. This value is measured in serum.
For Bilirubin, Total, the commonly taught critical (panic) value is: > 15 mg/dL in neonates (kernicterus 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
At the bedside
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