The Medical Algorithms Project       
 
Chapter : ch40. Unit Conversions Section : Unit Conversions

  Conversion of Conventional to SI Units: Urine Chemistries

  Excel Sheet Reference
Copyright (c) 2006-2007, Institute for Algorithmic Medicine, Houston, TX, USA. All rights reserved.
     

Overview :

Results of chemistry tests performed on urine can be converted between conventional (US) and SI units if the conversion factors are known.

Specimen: urine

Test

Conventional Units

Factor for Conversion

SIU Units

17-Hydroxycorticosteroids (17-OHCS)

mg/g of creatinine

113.1

mg/mol of creatinine

17-Hydroxyketosteroids (17-OHKS, cortisol)

mg/24 h

2.76

µmol/d

17-Hydroxyketosteroids (17-OHKS, cortisol)

µg/24 h

2.76

nmol/d

17-Ketosteroids (as DHEA)

mg/24 h

3.47

µmol/d

5-Hydroxyindoleacetic acid (5-HIAA)

mg/24 h

5.2

µmol/d

Albumin

mg/24 h

0.001

g/d

Aldosterone

mEq/24 h

1

mmol/d

Aldosterone

µg/24 h

2.77

nmol/d

Amylase

Somogyi units/h

0.185

U/h

Ascorbic acid

mg/dL

5.678

µmol/L

Calcium

mg/24 h

0.025

mmol/d

Catecholamines, fractionated - dopamine

µg/24 h

6.53

nmol/d

Catecholamines, fractionated - dopamine

µg/mg creatinine

738

µmol/mol creatinine

Catecholamines, fractionated - dopamine

pg/mL

6.53

pmol/L

Catecholamines, fractionated - dopamine

ng/mL

6.53

nmol/L

Catecholamines, fractionated - epinephrine

µg/24 h

5.46

nmol/d

Catecholamines, fractionated - epinephrine

µg/mg creatinine

617

µmol/mol creatinine

Catecholamines, fractionated - epinephrine

pg/mL

5.46

pmol/L

Catecholamines, fractionated - epinephrine

ng/mL

5.46

µmol/d

Catecholamines, fractionated - norepinephrine

µg/24 h

5.91

nmol/d

Catecholamines, fractionated - norepinephrine

µg / mg creatinine

669

µmol/mol creatinine

Catecholamines, fractionated - norepinephrine

pg/mL

5.91

pmol/L

Catecholamines, fractionated - norepinephrine

ng/mL

5.91

nmol/L

Chloride

mEq/24 h

1

mmol/d

Copper

µg/24 h

0.0157

µmol/d

Coproporphyrin

µg/dL

15.27

nmol/L

Coproporphyrins

µg/24 h

1.527

nmol/d

Creatinine

g/24 h

8.84

mmol/d

Creatinine

mg/24 h

0.0088

mmol/d

Creatinine

mg/kg/24 h

8.84

µmol/kg•d

Cyclic adenosine monophosphate (c-AMP)

mg/24 h

3.04

µmol/d

Cyclic adenosine monophosphate (c-AMP)

mg/g creatinine

344

µmol/mol creatinine

Estrogens, total

µg/24 h

3.47

nmol/d

Glucose

mg/d

0.0056

mmol/d

Homovanillic Acid (HVA)

mg/24 h

5.49

µmol/d

Homovanillic Acid (HVA)

µg/24 h

0.0055

µmol/d

Homovanillic Acid (HVA)

µg/mg of creatinine

0.621

mmol/mol of creatinine

Lead

µg/24 h

0.0048

µmol/d

Magnesium

mg/24 h

0.411

mmol/d

Magnesium

mEq/24 h

0.5

mmol/d

Metanephrines, fractionated - metanephrine

mg/24 h

5.07

µmol/d

Metanephrines, fractionated - metanephrine

mg/g creatinine

0.5736

µmol/mol creatinine

Metanephrines, fractionated - normetanephrine

ng/mL

5.46

nmol/L

Metanephrines, fractionated - normetanephrine

mg/ g creatinine

0.617

mmol/ mol creatinine

Muramidase (lysozyme)

mg/24 h

1

mg/d

Myoglobin

mg/L

1

mg/L

Phosphate (inorganic phosphorus)

g/24 h

32.29

mmol/d

Porphobilinogen

mg/24 h

4.42

µmol/d

Potassium

mEq/24 h

1

mmol/d

Potassium

mg/24 h

0.0256

mmol/d

Pregnanediol

mg/d

3.12

µmol/d

Protein, total

mg/24 h

0.001

g/d

Reducing substances, total

mg/d

1

mg/d

Sodium

mEq/24 h

1

mmol/d

Sodium

mg/24 h

0.0435

mmol/d

Urea nitrogen

g/24 h

0.0357

mol/d urea

Uric acid

mg/24 h

0.0059

mmol/d

Uroporphyrin

µg/24 h

1.204

nmol/d

Uroporphyrin

µg/gm creatinine

1.1362

nmol/ mmol creatinine

Vanillylmandelic acid (VMA)

mg/24 h

5.046

µmol/d

Vanillylmandelic acid (VMA)

µg / mg creatinine

0.571

mmol / mol of creatinine

Xylose

mg/dL

0.0666

mmol/L

Xylose

g/5 h

6.66

mmol/5 h

Zinc

mg/d

15.3

µmol/d

∂-Aminolevulinic acid

mg/24 h

7.63

µmol/d

  References:

American Society of Clinical Pathology. SI Conversion Guide. adapted from AJCP. 1987; 87:140-151.

Conversion Table for SI Units. Transfusion 1990; 30:79-90.

JAMA Instructions for Authors. 1997; 278: 74-76.

Jordan CD, Flood JG, et al. Normal reference laboratory values. NEJM. 1992; 327: 718-724.

Lehmann HP, Henry JB. Appendix 4: SI Units. pages 1449-1462. IN: Henry JB. Clinical Diagnosis and Management by Laboratory Methods, Nineteenth Edition. W.B. Saunders. 1996.

Lundberg GD. SI Unit Implementation - the next step. JAMA. 1988; 260: 73-74.

McQueen MJ. SI Unit Pocket Guide. ASCP Press. Chicago. 1990.

Tietz NW (editor). Clinical Guide to Laboratory Tests, Third Edition. W.B. Saunders Co. 1995.

Wallach J. Interpretation of Laboratory Tests, 6th edition. Little, Brown and Company. 1996. pages 923-936.

Wallach J. Interpretation of Laboratory Tests, 7th edition. Lippincott Williams & Wilkins. 2000. page 978,

Wilson JD, Foster DW. Williams Textbook of Endocrinology, 8th Edition. W.B. Saunders Co. 1992. (front cover interleaf)

Young DS. Implementation of SI Units for Clinical Laboratory Data. Ann Intern Med. 1987; 106:114-129.

 

   Excel Sheet | Reference TOP
     Pubmed Search For
Copy and paste the article title, or authors names into the search box