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Failed Schilling Tests
Author(s) -
Chanarin I.,
Waters D. A. W.
Publication year - 1974
Publication title -
scandinavian journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 84
eISSN - 1600-0609
pISSN - 0036-553X
DOI - 10.1111/j.1600-0609.1974.tb00205.x
Subject(s) - excretion , urine , urinary system , endocrinology , renal function , absorption (acoustics) , medicine , chemistry , urology , physics , acoustics
21 % of 228 tests for vitamin B 12 absorption were unsatisfactory because of a discrepancy between the result obtained by the urinary excretion method and by the measurement of plasma radioactivity. The usual error was recording a too low value for the urinary excretion because of incomplete urine collection or impaired renal function. In all these cases the plasma radioactivity was within the normal range. In 4 patients plasma radioactivity was too low but urinary excretion normal.