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#1




convert mg/dl to micromoles
Can someone tell me how to convert alpha 1 antitrypsin in mg/dl to micromoles?

#2




Re: convert mg/dl to micromoles
Quote:
You also need the molecular weight of the molecule, which will also be the molar mass, in grams per mole. If you just divide the mg/dL figure by molecular weight, you will get mmol/dL. 
#3




Re: convert mg/dl to micromoles
(g/vol(L)/52000)*10^6 = alpha 1 in micromolar

#4




Re: convert mg/dl to micromoles
Can anyone tell us how to convert micromoles to mg/dL with alpha 1 antitrypsin?
Is there a chart that provides all the units of measure the labs use for measuring alpha 1 anitrypsin? 
#5




Re: convert mg/dl to micromoles
Quote:
Wikipedia states the molar mass with great precision as 44324.5 g/mol. Unfortunately, it is a very complex molecule and seems to exist in more than one form. Various articles claim various molecular weights from 44  54 kDa (44  54 kg/mol) with Wikipedia near the low end. The journal of the AMA suggests multiplying g/dL by 0.184 for µmol/L (MW ~ 54 kDa). The Wikipedia value would give a multiplier of 0.226. 52 kDa seems to be another commonly referenced MW and it would give 0.192 as a multiplier. To go the other way, divide instead of multiply. However, I have no way of determining which of the above factors is correct. I would lean toward the JAMA value, after all, they are the doctors. 
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