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Clinical Chemistry, Vol 20, 1116-1120, Copyright © 1974 by the American Association for Clinical Chemistry
1 Department of the Army, Edgewood Arsenal, Biomedical Laboratory, Aberdeen Proving Ground, Md. 21010.
We describe a sensitive, accurate automated method for the simultaneous measurement of methemoglobin and total hemoglobin in blood. The method can be used for either continuous in vivo monitoring or intermittent sampling at a rate of 20/h. Standardization procedures are described, in which human blood treated with sodium nitrite is used. Repeatability of methemoglobin and total hemoglobin measurements, expressed as coefficient of variation in percent, are within ±4.1 and ±2.6%, respectively. Normal methemoglobin concentrations in humans and dogs did not exceed 0.55 g/dl (3.3% of the total hemoglobin).
Submitted on October 15, 1973
Accepted on May 21, 1974
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