Common lab values – [ B ] Normal Laboratory Reference Ranges

[ Lab Values – A thru Z ]

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Common Laboratory Values for Lab Tests

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Common Laboratory (LAB) Values - Laboratory values for lab tests

Normal Lab Reference Values

Lab (Specimen)

Conventional Units

SI Units
Bicarbonate: 
Arterial
Venous
top of page		 21 - 28 mEq/L
22 - 29 mEq/L 		21 - 28 mmol/L
22 - 29 mmol/L
Bilirubin, Direct (Conjugated) Serum 
 top of page		 < 0.40 mg/dL ≤ 7 µmol/L
Bilirubin Total (Serum)
 top of page		 < 1.3 mg/dL  (0.1 -1.3 mg/dL) ≤ 22 µmol/L
Alt source: 2 - 18 µmol/L
Blood Urea Nitrogen (BUN) (serum) 
 top of page		 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
Common lab values – [ B ] Normal Laboratory Reference Ranges