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What are normal results for a phenylketonuria screen?

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Dr. Joseph Woods
Pathology

In brief: Under 120 umol/L.

The pricipal test for screening for phenylketonuria is the guthrie test, which is used to screen newborns for phenylketonuria.
The guthrie assay can detect serum phenylalanine levels of 180-240 ?mol/l (3–4 mg/dl). In healthy normal people, phenylalanine levels are usually below 120 ?mol/l.

In brief: Under 120 umol/L.

The pricipal test for screening for phenylketonuria is the guthrie test, which is used to screen newborns for phenylketonuria.
The guthrie assay can detect serum phenylalanine levels of 180-240 ?mol/l (3–4 mg/dl). In healthy normal people, phenylalanine levels are usually below 120 ?mol/l.
Dr. Joseph Woods
Dr. Joseph Woods
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