Table 1.

Reasons for Newborns Born in Alberta to Require a Repeat Sample for Metabolic Screening, 1992, and the Proportion Complying With a Request For a Repeat Sample

ReasonnReason
Percent
Percent Repeated by
Screening Program
<24 Hour Samples
<24 Hour sample23517.146.4
Poor quality (NSQ/US)14010.265.52
Abnormal amino acid14910.850.01
High phenylalanine80.1100.0
High tyrosine71351.944.23
Low biotin725.253.41
High TSH584.224.110
Total1375100.047.917