Ethanol level (and all substances levels) is indirectly obtained by multiplying the osmolar gap by 4.6 (4.6 converts from ethanol in mmol/L to ethanol in mg/dL), or dividing the osmolar gap by the ethanol conversion factor. Notice that this gap might be due to many other substances including --but not limited to-- methanol, ehtylene glycol, etc. See for more about Osmolar gap and substances levels.

Substances Master™ computes all the substances outputs from the 5 inputs. Notice that the different outputs are independent and not related, they represent the hypothetical levels of substances. Outputs are computed from the osmolar gap. MediCalculator™ computes the Osm Gap, suppose it is 10. All output fields will have a result of 10 mmol/L. (e.g. Input the following: Na = 145, K = 5, glucose = 180, BUN = 28, Osm measured = 330. Click on the calculate button and let's look at the ethanol level. The result is 46.1 mg/dL. This means that for an Osmolar Gap of 10, and if ethanol is the substance responsible for the gap, the level of ethanol in serum is around 46.1mg/dL (or 10mmol/L). If the substance responsible for the Osm gap is methanol, then the expected level in serum would be 32 mg/dL (or 10mmol/L) and so on.).