An evaluation of the meconium 'lactase test' for the detection of cystic fibrosis in the newborn.

Recently, Antonowicz et al. proposed a simple test for cystic fibrosis that 
could be used to verify the Boehringer-Mannheim meconium test result and 
thus reduce the false-positive incidence. The test is based on the 
detection of lactase activity in meconium. The 'lactase test' may be 
of some value as a confirmatory test when used with the 
BM-mec test although its specificity in this study was not as 
good as previously reported. 