• 1 January 1975
    • journal article
    • research article
    • Vol. 46  (1) , 37-49
Abstract
F- concentration in the urine of subjects drinking F--poor water was investigated. In the 1st series of experiments, mean F- concentration in the urine collected for 24 h was 0.26 mg/l, in the 2nd series, 0.28 mg/l and in group fractions 0.20 mg/l. SD were 0.07-0.12 mg/l. No conclusion was drawn from the F- level of a single urine fraction to the 24 h F- level of the same subject. In group tests, means reflected the expected 24 h values. There were differences in the urinary F- levels of the subjects. Values for the same subject also varied; they were different on different days and the fractions collected on the same days showed variations. Older people excreted more F- than young ones.