Community Discussion Forum Parent support question about weekly phe test Reply To: question about weekly phe test

Avatar of Breanna

I was told by a few of my childhood PKU doctors that it does not matter when you do blood tests. Phe levels fluctate throughout the day, so no matter what you do if you do a phe level in the morning it could be completely different by night. Like Katie I try to be consistent by doing my phe levels right before going to sleep, but in the end it does not matter. Blood tests are just used to be sure that the amount of phe you are consuming is the proper amount.

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