Abstract
A method is described for the direct measurement of Kryptofix 2.2.2 levels in 18FDG preparations dissolved in isotonic saline using gas Chromatography coupled with a nitrogen-selective detector. The cryptand can be eluted intact in 2 min time from a short megabore capillary column, and detected at levels as low as 0.25 μg/mL. This method offers rapid, quantitative and sensitive detection of Kryptofix 2.2.2 levels in 18FDG thus making it amenable to routine quality assurance testing.
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