Description

Results of chemistry tests performed on serum, plasma, whole blood or erythrocytes can be converted between conventional (US) and SI units if the conversion factors are known.


Specimen: serum (S), plasma (P), whole blood (WB) or erythrocytes (RBCs)

 

Test, Method

Speci-men

Conventional Units

Factor for Conversion

SIU Units

11-Deoxycorticosterone (DOC)

S

pg/mL

3.03

pmol/L

Acetone

S

mg/dL

172.95

µmol/L

Acid phosphatase, prostatic

S

U/L

1

U/L (nKat/L)

Acid phosphatase, prostatic, Bessey-Lowry-Brock

S

Bessey-Lowry-Brock units per L at 37°C

16.67

U/L at 37° C (nkat/L)

Adrenocorticotropic hormone (ACTH)

S

pg/mL

1

ng/L

Adrenocorticotropic hormone ACTH)

S

pg/mL

0.2202

pmol/L

Alanine amino-transferase (ALT, SGPT)

S

U/L at 37° C

1

U/L at 37° C

Alanine amino-transferase (ALT, SGPT)

S

U/L at 37° C

0.017

µKat/L

Albumin

S

g/dL

10

g/L

Aldolase, Sibley-Lehninger

S

U/L at 37° C

0.74

U/L at 37° C

Aldolase

S

U/L

0.017

µKat/L

Aldosterone

S

ng/dL

0.0277

nmol/L

Alkaline phosphatase, King-Armstrong

S

King Armstrong units/dL

7.1

U/L

Alkaline phosphatase

S

U/L

0.017

µKat/L

Alkaline phosphatase, Babson

S

Babson units per L at 37°C

1

U/L at 37° C

alpha-1 Antitrypsin

S

mg/dL

0.01

g/L

alpha-Fetoprotein (AFP)

S

ng/mL

1

µg/L

alpha-Fetoprotein (AFP)

S

ng/dL

10

ng/L

alpha-Fetoprotein (AFP)

S

mg/dL

0.01

g/L

alpha-Fetoprotein (AFP)

S

mg/dL

10

mg/L

alpha-Fetoprotein (AFP)

S

µg/dL

10

µg/L

Ammonia

P

µg NH3/dL

0.5872

µmol NH3/L

Ammonia

P

µg N/dL

0.714

µmol N/L

Amylase, Somogyi (saccharogenic)

S

U/dL

1.85

U/L

Amylase

S

U/L

0.017

µKat/L

Androstenedione

S

ng/dL

34.92

pmol/L

Angiotensin converting enzyme (ACE)

S

nmol/min/mL

1

U/L

Angiotensin II

S

ng/dL

10

ng/L

Anion gap

S

mEq/L

1

mmol/L

Antidiuretic hormone (ADH)

S

pg/mL

1

ng/L

Apolipoprotein A1

S

mg/dL

10

mg/L

Apolipoprotein B

S

mg/dL

10

mg/L

Aspartate amino-transferase (AST, SGOT)

S

U/L at 37° C

1

U/L at 37° C

Aspartate amino-transferase (AST, SGOT)

S

U/L at 37° C

0.017

µKat/L

Base Excess

S

mEq/L

1

mmol/L

Bicarbonate

S

mEq/L

1

mmol/L

Bilirubin

S

mg/dL

17.1

µmol/L

Calcitonin

S

pg/mL

1

ng/L

Calcium

S

mg/dL

0.25

mmol/L

Calcium

S

mEq/L

0.5

mmol/L

Calcium, ionized

S

mg/dL

0.25

mmol/L

Carbon dioxide partial pressure pCO2

WB

mm Hg

0.133

kPa

Carbon dioxide total

S

mEq/L

1

mmol/L

Carcinoembryonic Antigen (CEA)

S

ng/mL

1

µg/L

Carcinoembryonic Antigen (CEA)

S

µg/mL

1

mg/L

Carotene

S

µg/dL

0.0186

µmol/L

Catecholamines, fractionated - epinephrine

P

pg/mL

5.458

pmol/L

Catecholamines, fractionated - norepinephrine

P

pg/mL

0.0059

nmol/L

Ceruloplasmin

S

mg/dL

10

mg/L

Chloride

S

mEq/L

1

mmol/L

Chloride

S

mg/dL

0.282

mmol/L

Cholesterol

S

mg/dL

0.0259

mmol/L

Cholinesterase (pseudocholinesterase)

S

U/L at 37° C

1

U/L at 37° C

Copper

S

µg/dL

0.157

µmol/L

Coproporphyrins

S

µg/dL

15

nmol/L

Cortisol

S

µg/dL

0.028

µmol/L

Cortisol

S

ng/mL

2.76

nmol/L

Creatine

S

mg/dL

76.3

µmol/L

Creatine kinase

S

U/L at 37° C

1

U/L at 37° C

Creatine kinase

S

U/L at 37° C

0.017

µKat/L

Creatinine

S

mg/dL

88.4

µmol/L

Creatinine clearance

S

mL/min/1.73 m^2

0.0096

mL/sec•m^2

cyclic Adenosine monophosphate (cAMP)

S

µg/L

3.04

nmol/L

cyclic Adenosine monophosphate (cAMP)

WB

ng/mL

3.04

nmol/L

Dehydroepiandrosterone sulfate (DHEA-S)

S

µg/mL

2.6

µmol/L

delta-Aminolevulinic acid

S

mg/dL

76.26

µmol/L

Ferritin

S

ng/mL

1

µg/L

Folate

S

ng/mL

2.266

nmol/L

Galactose

WB

mg/dL

0.05551

mmol/L

Gamma glutamyl transferease (GGT)

S

U/L at 37° C

1

U/L at 37° C

Gamma glutamyl transferease (GGT)

S

U/L at 37° C

0.017

µKat/L

Gastrin

S

pg/mL

1

ng/L

Glucose

S

mg/dL

0.0555

mmol/L

Glutathione

WB

mg/dL

0.0325

mmol/L

Growth hormone

S

ng/mL

1

µg/L

Haptoglobin

S

mg/dL

0.01

g/L

HDL-cholesterol

S

mg/dL

0.0259

mmol/L

Human chorionic gonadotropin (HCG), beta-subunit

S

mU/mL

1

IU/L

Hydroxybutyric dehydrogenase

S

U/mL

1

kU/L

Insulin

P

µIU/mL

6.945

pmol/L

Iron

S

µg/dL

0.179

µmol/L

Iron binding capacity

S

µg/dL

0.179

µmol/L

Iron saturation

S

%

0.01

fraction saturation

Isocitrate dehydrogenase (ICD), Wolfson-Williams-Ashman

S

units/mL at 25° C

0.0167

U/L at 25° C

Isocitrate dehydrogenase (ICD)

S

U/L

0.017

µKat/L

Lactate

S

mg/dL

0.111

mmol/L

Lactate dehydrogenase (LD), Wroblewski

S

units/mL at 30° C

0.482

U/L at 30° C

Lactate dehydrogenase (LD)

S

U/L at 37° C

1

U/L at 37° C

LDL-cholesterol

S

mg/dL

0.0259

mmol/L

Lead

S

µg/dL

0.0483

µmol/L

Lead

S

mg/dL

48.26

µmol/L

Leucine aminopeptidase (LAP), Goldbarg-Rutenberg

S

U/mL

0.24

U/L

Leucine aminopeptidase (LAP)

S

U/L

0.017

µKat/L

Lipase, Cherry-Crandal

S

U/mL

278

U/L

Lipase

S

U/L

0.017

µKat/L

Lipids, total

S

mg/dL

0.01

g/L

Luteinizing hormone (LH)

S

mIU/mL

1

IU/L

Magnesium

S

mEq/L

0.5

mmol/L

Magnesium

S

mg/dL

0.411

mmol/L

Malic dehydrogenase

S

U/L

0.017

µKat/L

Methemoglobin

WB

g/dL

10

g/L

Muramidase

S

mg/L

1

mg/L

Myoglobin

S

µg/L

1

µg/L

Osmolality

S

mOsm/kg H2O

1

mOsm/kg H2O

Osteocalcin

S

ng/mL

1

µg/L

Oxygen partial pressure pO2

WB

mm Hg

0.133

kPa

Parathyroid hormone (PTH)

S

pg/mL

1

ng/L

pH

WB

nEq/L

1

nmol/L

Phenylalanine

S

mg/dL

60.54

µmol/L

Phosphate, inorganic phosphorus

S

mg/dL

0.323

mmol/L

Porphobilinogen

S

µg/d

4.42

µmol/d

Potassium

S

mEq/L

1

mmol/L

Progesterone

S

ng/dL

0.0318

nmol/L

Prolactin

S

ng/mL

1

µg/L

Protein, total

S

g/dL

10

g/L

Protoporphyrin

RBCS

mg/dL

0.0178

µmol/L

Pyruvate

WB

mg/dL

113.6

µmol/L

Renin (plasma renin activity, PRA)

S

ng/mL/h

1

µg/L•hr

Reverse T3 (rT3)

S

ng/dL

0.0154

nmol/L

Serotonin

S

ng/mL

0.0057

µmol/L

Sodium

S

mEq/L

1

mmol/L

Testosterone

S

ng/dL

0.0347

nmol/L

Thyroglobulin

S

ng/mL

1

µg/L

Thyroxine binding globulin (TBG)

S

mg/dL

10

mg/L

Thyroxine binding globulin (TBG)

S

µg/dL

10

µg/L

Thyroid stimulating hormone (TSH)

S

µU/mL

1

mIU/L

Thyrotropin releasing hormone (TRH)

S

pg/mL

1

ng/L

Thyrotropin releasing hormone (TRH)

S

pg/mL

2.759

pmol/L

Thyroxine (T4) total

S

µg/dL

12.9

nmol/L

Thyroxine, free

S

ng/dL

12.9

pmol/L

Transferrin (TIBC)

S

mg/dL

0.01

g/L

Tri-iodothyronine (T3), free

S

pg/mL

15.4

nmol/L

Tri-iodothyronine (T3), total

S

ng/dL

0.0154

nmol/L

Triglycerides

S

mg/dL

0.0113

mmol/L

Troponin I

S

mg/mL

1

µg/L

Troponin I

S

µg/L

1

µg/L

Troponin T

S

µg/L

1

µg/L

Urea nitrogen

S

mg/dL

0.357

mmol/L urea

Uric acid

S

mg/dL

0.0595

mmol/L

Viscosity

S

centipoise

1

centipoise

Vitamin A1

S

µg/dL

0.0349

µmol/L

Vitamin B12 (cyanocobalamin)

S

pg/mL

0.738

pmol/L

Vitamin B12, unsaturated binding capacity

S

pg/mL

0.738

pmol/L

Vitamin B6

S

ng/mL

5.982

nmol/L

Vitamin C (ascorbic acid)

S

mg/dL

5.678

µmol/L

Vitamin D (calciferol, 1,25-dihydroxy)

S

pg/mL

2.4

pmol/L

Vitamin D (calciferol, 25-hydroxy)

S

ng/mL

2.496

nmol/L

Vitamin E (tocopherol)

S

ng/mL

23.22

nmol/L

Xylose (from absorption)

S

mg/dL

0.0666

mmol/L

Zinc

S

µg/dL

0.153

µmol/L

 


To read more or access our algorithms and calculators, please log in or register.