Radiant energy – Ionic separation or analysis – Methods
Reexamination Certificate
2008-12-16
2011-10-18
Nguyen, Kiet (Department: 2881)
Radiant energy
Ionic separation or analysis
Methods
C250S288000, C435S006120, C435S015000, C435S193000
Reexamination Certificate
active
08039794
ABSTRACT:
Methods are described for measuring the amount of a methylation TPMT enzyme product in a sample. More specifically, mass spectrometric methods are described for detecting and quantifying 6-MMP or isotopically labeled 6-MMP in a test sample utilizing mass spectrometric techniques and for using such methods to determine the activity of TPMT enzyme that is present in a sample.
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Clarke Nigel J.
Haddon William F.
Foley & Lardner LLP
Nguyen Kiet
Quest Diagnostics Investments Incorporated
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