Common Laboratory (LAB) Values [ B ]

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B
Bicarbonate Bilirubin, Direct (Conjugated) Bilirubin Total (Serum) Blood Urea Nitrogen (BUN)
Lab (Specimen)	Conventional Units	SI Units
Bicarbonate:  Arterial Venous	21 - 28 mEq/L 22 - 29 mEq/L	21 - 28 mmol/L 22 - 29 mmol/L
Bilirubin, Direct (Conjugated) Serum	< 0.40 mg/dL	</= 7 µmol/L
Bilirubin Total (Serum)	< 1.3 mg/dL  (0.1 -1.3 mg/dL)	</= 22 µmol/L Alt source: 2 - 18 µmol/L
Blood Urea Nitrogen (BUN) (serum)	7 - 30 mg/dL Alternative source: 8-25 mg/dL	2.5 - 10.7 mmol urea /L Alt source: 2.9-8.9 mmol/L
Important Notes
>Unless noted, all values are for adults. >All laboratory values listed are method dependent (Methods include: immunoassay, colorimetry, electrophoresis, HPLC, etc). >Values may vary between laboratories.