Published in Medical Letter on the CDC and FDA, September 26th, 2004
The test is done on blood from newborn heel-stick samples - the same kind of sample used for state-mandated newborn screening tests. The blood sample is measured for levels of amino acids and substances called free carnitine and acylcarnitines.
While small amounts of these substances are found in everyone, abnormally high amounts, or abnormal patterns, may indicate different disease states called inborn errors of metabolism. They include, but are not limited to,...
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