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Formulas and conversion tables used in the chapters discussing alcohols.
FormulasTop
Anion gap = Serum sodium (mEq/L) – [serum chloride (mEq/L) + serum bicarbonate (mEq/L)]
Note: mEq/L = mmol/L; an anion gap ≥12 is considered high (note normal values in your laboratory).
Osmolar gap = Measured osmolality (mOsm/L) – calculated osmolarity
Note: An osmolar gap >10 mOsm/L is considered high.
Calculated osmolarity (mOsm/L) = 2 × [sodium (mmol/L)] + [glucose (mmol/L)] + [urea (mmol/L)] + 1.25 × [ethanol (mmol/L)]
TablesTop
| Alcohol measured (multiply mg/dL by CF to calculate SI units) | Conventional unit (US) | Conversion factor (CF) | SI unit (Canada) |
|
Ethanol (ethyl alcohol) |
mg/dL |
0.217 |
mmol/L |
|
Methanol (methyl alcohol) |
mg/dL |
0.312 |
mmol/L |
|
Ethylene glycol |
mg/dL |
0.161 |
mmol/L |
|
Isopropanol (isopropyl alcohol) |
mg/dL |
0.166 |
mmol/L |
