Hydrogen sulfide (H 2 S) signaling has been implicated in physiological processes in
practically all organ systems studied to date. At times the excitement of this new field has
outpaced the technical expertise or practical knowledge with which to accurately assess
these advancements. Recently, the myriad of proposed H 2 S actions has spawned interest
in using indicators of H 2 S metabolism, especially plasma H 2 S concentrations, as a means
of identifying a variety of pathophysiological conditions or to predict clinical outcomes. While …