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Clinical Chemistry SI Conversion Factors

By

Susan E. Fielder

, DVM, MS, DACVP (Clinical Pathology), Oklahoma State University

Last full review/revision Oct 2015 | Content last modified Oct 2015
Topic Resources
Table
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Clinical Chemistry SI Conversion Factors

Measure

Conventional (USA) Units

Conversion Factor (×)

SI Units

Alkaline phosphatase

IU/L

1.0

U/L

ALT

U/L

1.0

U/L

Albumin

g/dL

10.0

g/L

Ammonia (NH4)

mcg/dL

0.5872

μmol/L

Amylase

Somogyi units

1.85

U/L

AST

U/L

1.0

U/L

Bilirubin

mg/dL

17.10

μmol/L

Calcium

mg/dL

0.25

mmol/L

Carbon dioxide

mEq/L

1.0

mmol/L

Chloride

mEq/L

1.0

mmol/L

Cholesterol

mg/dL

0.026

mmol/L

Copper

mcg/dL

0.16

μmol/L

Cortisol

mcg/dL

27.6

nmol/L

CK

IU/L

1.0

U/L

Creatinine

mg/dL

88.40

μmol/L

Fibrinogen

mg/dL

0.01

g/L

Glucose

mg/dL

0.055

mmol/L

Iron, binding

mcg/dL

0.179

μmol/L

Iron, total

mcg/dL

0.179

μmol/L

Lipase

IU/L

1

U/L

Cherry-Crandall U

278

U/L

Magnesium

mEq/L

0.5

mmol/L

Osmolality

Osm/kg

1.0

mmol/L

Phosphorus

mg/dL

0.323

mmol/L

Potassium

mEq/L

1.0

mmol/L

Protein, total

g/dL

10.0

g/L

Sodium

mEq/L

1.0

mmol/L

Triglycerides

mg/dL

0.011

mmol/L

Triiodothyronine (T3)

mcg/dL

15.6

nmol/L

Thyroxine (T4)

mcg/dL

12.87

nmol/L

Urea nitrogen

mg/dL

0.357

mmol/L

Uric acid

mg/dL

0.059

mmol/L

Urine protein/creatinine ratio

g/g

0.113

g/mmol

Xylose absorption

mg/dL

0.067

mmol/L

Adapted from Veterinary Laboratory Medicine: Interpretation and Diagnosis, Meyer DH, Harvey JW, 3rd ed., Copyright 2004, with permission from Elsevier.

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Disorders of Calcium Metabolism
Calcium, in its ionic form, plays a key role in the function of many body systems. Precise control of calcium ion concentrations in extracellular fluids is regulated by several hormones. Which of the following is NOT involved in calcium homeostasis?
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