Temporal intrapersonal physiological variability of cholinesterase activity in human plasma and erythrocytes.
Erythrocyte and plasma cholinesterase activities were measured biweekly in one group of 22 subjects for a year and daily for three weeks in another group of nine men. The average range [i.e., (range/mean) X 100] of activity of erythrocyte cholinesterase in men during a year was 8% and during three weeks was 5%. For plasma, the corresponding values were 25% and 12%. The average ranges for erythrocyte and plasma cholinesterase activity in women during a year were 12% and 24%. Erythrocyte cholinesterase activity varies less than do hematocrit, hemoglobin, or erythrocyte count.
D000328:Adult; D000368:Aged; D002802:Cholinesterases / Q000097:blood*; D004906:Erythrocyte Count; D004912:Erythrocytes / Q000201:enzymology*; D005260:Female; D006400:Hematocrit; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors
D006454:Hemoglobins; D002802:Cholinesterases