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How to covert ammonia levels to ug/dl

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  • How to covert ammonia levels to ug/dl

    I just got my tests back from a lab and I would like to convert 6.5 mmol/dl of ammonia to micrograms per dl

    can to help me out?

  • #2
    Re: How to covert ammonia levels to ug/dl

    Originally posted by steve198329@hotmail.com
    I just got my tests back from a lab and I would like to convert 6.5 mmol/dl of ammonia to micrograms per dl

    can to help me out?
    Please check the units again. I believe there may be some confusion between millimoles and micromoles and/or between liters and deciliters.

    The basic conversion between grams and moles requires knowing the molecular weight, which is also the molar mass. For ammonia, NH3, it is 17.03 g/mol. The rest is a matter of prefix manipulation.

    If 6.5 mmol/dL were correct (I Believe it is NOT!!), it would convert as follows
    6.5 mmol/dL x 17.03 g/mol = 110.7 mg/dL = 110700 g/dL

    This is seriously outside the normal range. In addition, based on the JAMA medical conversions page link posted in resources, the normal "International" way of expressing ammonia is mol/L (micromoles per liter).

    IF we assume those are the units, the conversion would proceed as
    6.5 mol/L x 17.03 g/mol x 1L/10 dL = 11.07 g/dL

    Both numbers should be considered unreliable until you have sorted out the units.

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    • #3
      Re: How to covert ammonia levels to ug/dl

      OH, wait never mind. Those are amino acid analyte markers for ammonia which is 6.5. Sorry, but thanks so much for your help anyway

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