| thiocyanate levels of mainly dietary origin in serum and urine from a human population sample in port harcourt, nigeria. | thiocyanate levels were determined in serum and urine samples obtained from a human population sample of healthy non-smoking volunteers (aged between 14 and 30 years) of both sexes known to eat gari-based meals at least once a day. the samples were collected before and 3-4 hours after a gari- or rice-based meal. the values obtained before the test meals showed a wide variation, ranging between 39.20 +/- 1.95 to 160.95 +/- 8.06 mumol/l of serum, and 81.92 +/- 9.78 to 294.01 +/- 14.70 mumol/l of u ... | 1994 | 7716108 |