SI Unit -Part 1- Conventional Units Conversion factors (International unit and conventional unit) For Lab Test
- We are going to discuss how to convert SI units to conventional units and vice versa.
- To convert from a conventional unit to an SI Unit, multiply by the conversion factor (e.g. Albumin 3 g/dl x 10 = 30 g/L.
- To convert from SI units to conventional units, divide by the conversion factor.
The formula for conversion of conventional unit to SI unit
| Test | Conventional unit | Conversion Factor | S I unit |
|---|---|---|---|
| Albumin | g / dL | 10 | g / L |
| alpha1-Antitrypsin | mg /dL | 0.184 | micromole/L |
| Alanine | mg / dL | 112.2 | micromole/L |
| Bicarbonate | mEq/L | 1.0 | mmol /L |
| Bilirubin | mg /dL | 17.1 | micromole /L |
| C-peptide | ng / mL | 0.333 | nmol /L |
| C-complement | mg /mL | 0.01 | g /L |
| Aldosterone | ng / dL | 0.0277 | nmol / L |
| Antidiuretic hormone | pg. / mL | 0.923 | pmol / L |
| Calcitonin | pg. / mL | 1.0 | ng / L |
| Calcium total | mg / dL | 0.25 | mmol / L |
| Calcium ionised | mEq /L | 0.50 | mmol / L |
| Carbon Dioxide | mEq /L | 1.0 | mmol / L |
| Ceruloplasmin | mg / dL | 10 | mg / L |
| Chloride | mEq / l | 1.0 | mmol / L |
| Cholesterol | mg / dL | 0.0259 | mmol / L |
| Copper | µg /dL | 0.157 | micromole / L |
| Corticotropin ACTH | pg. /mL | 0.22 | pmol / L |
| Cortisol | µg /dL | 27.59 | nmol / L |
| Creatinine | mg / dL | 88.4 | micromole / L |
| Creatinine Clearance | mL / min | 0.0167 | mL / S |
| DHEA | ng / mL | 3.47 | nmol / L |
| Estradiol | pg. /dL | 3.671 | pmol / L |
| Ferritin | ng / mL | 2.247 | pmol / L |
| AFP | ng / mL | 1.0 | µg / L |
| Fibrinogen | mg / dL | 0.0294 | micromole / L |
| Glucose | mg / mL | 0.0555 | mmol /L |
| Hb A1c | % of total Hb | 0.01 | proportion of total Hb |
| Hct | % | 0.01 | proportion of of 1.0 |
| Hemoglobin | g /dL | 10.0 | g /L |
| HDL-C | mg / dL | 0.0259 | mmol / L |
| HCG | mIU / mL | 1.0 | IU / L |
| Insulin | micro-IU / mL | 6.945 | pmol / L |
| Iron total | µg / dL | 0.179 | micro-mol / L |
| Total Iron binding capacity | µg / dL | 0.179 | micro-mol / L |
| Lactic acid | mg / dL | 0.111 | mmol / L |
| LDH isoenzymes | % | 0.01 | proportion of 1.0 |
| Lead | µg / dL | 0.0483 | micro-mol / L |
| Lipid total | mg / dL | 0.01 | g / L |
| Lithium | mEq /L | 1.0 | mmol / L |
| LDL-C | mg / dL | 0.0259 | mmol / L |
| Magnesium | mg / L | 0.411 | mmol / L |
| Methanol | mg / dL | 0.0312 | mmol / L |
| alpha 1-antitrypsin | mg / dL | 0.184 | micro-mol / L |
| Phosphorus | mg /dL | 0.323 | mmol / L |
| Potassium | mEq / L | 1.0 | mmol / L |
| Progesterone | ng / mL | 3.18 | mmol / L |
| Prolactin | µg / L | 43.478 | pmol |
| PSA | ng / mL | 1.0 | µg/ L |
| Protein total | g / dL | 10.0 | g / L |
| Sodium | mEq / L | 1.0 | mmol / L |
| Testosterone | ng / dL | 0.0347 | nmol / L |
| Free T 4 | ng / dL | 12.87 | pmol / L |
| Total T 4 | µg / dL | 12.87 | nmol / L |
| Transferrin | mg / dL | 0.01 | g / L |
| Triglycerides | mg / dL | 0.0113 | mmol / L |
| Free T3 | pg / dL | 0.0154 | pmol / L |
| Total T3 | ng / dL | 0.0154 | nmol / L |
| Troponin I | ng / mL | 1.0 | µg / L |
| Troponin T | ng / mL | 1.0 | µg / L |
| Urea nitrogen | mg / dL | 0.0357 | mmol / L |
| Uric acid | mg / dL | 59.48 | micromol / L |
| Vit.B | ng / mL | 0.0738 | pmol / L |