Guthrie test(redirected from Guthrie tests)
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Guthrie test[′gəth·rē ‚test]
A screening test for the detection of phenylketonuria in which the inhibition of growth of a strain of Bacillus subtilis by a phenylalanine analog is reversed byL-phenylalanine, as found in elevated concentration in the plasma of patients with phenylketonuria.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.