These are levels of dopamine that we see in patients taking
levodopa for parkinsonism. I suggest you get a drug history as a
drug or metabolite may coelute on your HPLC with dopamine.
If the urine levels are indeed that high, the plasma levels of
dopamine may be detectable, because plasma dopamine levels
are usually quite low.
Jeff Barron
St Helier Hospital
Carshalton
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