Lab (Specimen)

Conventional Units

SI Units

Magnesium (serum)

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1.5 – 2.4 mEq/L

Critical value:
<1.0 mEq/L and >4.7 mEq/L

 0.75 – 1.2 mmol/L

Critical value:
<0.5 mmol/L
    and >2.35 mmol/L

Mercury (blood)
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< 1 µg/dL < 50 nmol/L
Methemoglobin (blood)
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<2% of total Hb <0.02 of total Hb
Myelin basic protein (CSF)
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<4 ng/mL <4 µg/L
Myoglobin (serum)
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< 55 ng/mL <55 µg/L
Osmolality (serum)
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278 – 305 mOsm/kg 278 – 305 mmol/kg
Osmolality (urine)
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50 – 1200 mOsm/kg 50 – 1200 mmol/kg
Oxalate (urine)
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leq 40 mg/day leq 456 µmol/day

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The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user’s use of or reliance upon this material.PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER. Read the disclaimer