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

  Conversion of SI to Conventional 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

SIU Units

Factor for Conversion

Conventional Units

17-Hydroxycorticosteroids (17-OHCS)

mg/mol of creatinine

0.0088

mg/g of creatinine

17-Hydroxyketosteroids (17-OHKS, cortisol)

µmol/d

0.3625

mg/24 h

17-Hydroxyketosteroids (17-OHKS, cortisol)

nmol/d

0.3625

µg/24 h

17-Ketosteroids (as DHEA)

µmol/d

0.2904

mg/24 h

5-hydroxyindoleacetic acid (5-HIAA)

µmol/d

0.19

mg/24 h

Albumin

g/d

1000

mg/24 h

Aldosterone

mmol/d

1

mEq/24 h

Aldosterone

nmol/d

0.36

µg/24 h

Amylase

U/h

5.4054

Somogyi units/h

Ascorbic acid

µmol/L

0.176

mg/dL

Calcium

mmol/d

40

mg/24 h

Catecholamines, fractionated - dopamine

nmol/d

0.153

µg/24 h

Catecholamines, fractionated - dopamine

µmol/ mol creatinine

0.0014

µg/mg creatinine

Catecholamines, fractionated - dopamine

pmol/L

0.153

pg/mL

Catecholamines, fractionated - dopamine

nmol/L

0.153

ng/mL

Catecholamines, fractionated - epinephrine

nmol/d

0.183

µg/24 h

Catecholamines, fractionated - epinephrine

µmol/ mol creatinine

0.0016

µg/mg creatinine

Catecholamines, fractionated - epinephrine

pmol/L

0.183

pg/mL

Catecholamines, fractionated - epinephrine

nmol/L

0.183

ng/mL

Catecholamines, fractionated - norepinephrine

nmol/d

0.169

µg/24 h

Catecholamines, fractionated - norepinephrine

µmol/ mol creatinine

0.0015

µg/mg creatinine

Catecholamines, fractionated - norepinephrine

pmol/L

0.169

pg/mL

Catecholamines, fractionated - norepinephrine

nmol/L

0.169

ng/mL

Chloride

mmol/d

1

mEq/24 h

Copper

µmol/d

63.69

µg/24 h

Coproporphyrin

nmol/L

0.0655

µg/dL

Coproporphyrins

nmol/d

0.6549

µg/24 h

Creatinine

mmol/d

0.1131

g/24 h

Creatinine

mmol/d

113.1

mg/24 h

Creatinine

µmol/kg•d

0.113

mg/kg/24 h

Cyclic adenosine monophosphate (cAMP)

µmol/d

0.329

mg/24 h

Cyclic adenosine monophosphate (cAMP)

µmol/ mol creatinine

0.0029

mg/g creatinine

Estrogens, total

nmol/d

0.2884

µg/24 h

Glucose

mmol/d

180.15

mg/d

Homovanillic acid (HVA)

µmol/d

0.182

mg/24 h

Homovanillic acid (HVA)

µmol/d

182

µg/24 h

Homovanillic acid (HVA)

mmol/mol of creatinine

1.61

µg/mg of creatinine

Lead

µmol/d

207.04

µg/24 h

Magnesium

mg/24 h

2.433

mmol/d

Magnesium

mmol/d

2

mEq/24 h

Metanephrines, fractionated - metanephrine

µmol/d

0.1972

mg/24 h

Metanephrines, fractionated - metanephrine

µmol/mol creatinine

1.743

mg/g creatinine

Metanephrines, fractionated - normetanephrine

nmol/L

0.183

ng/mL

Metanephrines, fractionated - normetanephrine

mmol/mol creatinine

1.621

mg/g creatinine

Muramidase (lysozyme)

mg/d

1

mg/24 h

Myoglobin

mg/L

1

mg/L

Phosphate, inorganic phosphorus

mmol/d

0.0310

g/24 h

Porphobilinogen

µmol/d

0.226

mg/24 h

Potassium

mmol/d

1

mEq/24 h

Potassium

mmol/d

39.1

mg/24 h

Pregnanediol

µmol/d

0.3205

mg/d

Protein, total

g/d

1000

mg/24 h

Reducing substances, total

mg/d

1

mg/d

Sodium

mmol/d

1

mEq/24 h

Sodium

mmol/d

22.99

mg/24 h

Urea

mol/d

28

g/24 h urea nitrogen

Uric acid

mmol/d

168.12

mg/24 h

Uropophyrin

nmol/d

0.8306

µg/24 h

Uroporphyrin

nmol / mmol creatinine

0.8801

µg/ g creatinine

Vanillylmandelic acid (VMA)

µmol/d

0.1982

mg/24 h

Vanillylmandelic acid (VMA)

mmol/ mol of creatinine

1.75

µg per mg creatinine

Xylose

mmol/L

15.01

mg/dL

Xylose

mmol/5 h

0.15

g/5 h

Zinc

µmol/d

0.0654

mg/d

∂-Aminolevulinic acid

µmol/d

0.1311

mg/24 h

  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