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Clinical Chemistry, Vol 25, 2043-2045, Copyright © 1979 by American Association for Clinical Chemistry
JL Morrisey and ZK Shihabi
We describe a method for the assay of urinary 4-hydroxy-3- methoxymandelic acid (vanillylmandelic acid) based on separation on a microparticulate reversed-phase column and direct electrochemical detection. The method can be used after extraction from urine or by direct urine injection after 100-fold dilution.
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