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To the Editor A corollary to the association of incident heart failure and an increase in serum gamma glutamyl transferase (GGT)1 is that fluctuations in the severity of heart failure might also have the potential to trigger fluctuations in the blood levels of this parameter. Fluctuations in serum GGT levels (including restoration to the normal range) also occur during the course of the natural history of …
Competing interests None.
Provenance and peer review Not commissioned; internally peer reviewed.