Abstract
Flame photometry with internal standard is a rapid and accurate method for detn. of Na and K in serum, whole blood, and urine 20-30 samples can be estimated per hour. Analyses of 30 normal sera showed a mean value of 334 [plus or minus] 4.4 mg. % Na and 16 [plus or minus] 0.65 mg. % K. 30 samples of whole blood showed a mean value of l80[plus or minus]11.8 mg. % K.