How long after a protein feed must we wait before collecting the NBS specimen so that the PKU screen is valid?
A protein feed is not necessary before collecting the NBS specimen. A newborn has been receiving phenylalanine in utero. California’s laboratory testing methodology is a very sensitive quantitative one that does not require a further protein challenge. Therefore, follow the NBS guidelines for collecting specimens after 12 hours of age.
Related Questions
- I notice the NBS specimen collection form has a box for CORD BLOOD. Does this mean that we can use cord blood rather than sticking the newborns?
- How fast is DonorPerfect Online (will I have to wait a long time for information to appear on my browser screen)?
- I know that this specimen is databased, but I can t seem to retrieve the record from an EVENT screen query?
