During maximal effort, which organ can dump red cells and push a fit Thoroughbred’s PCV from about 32% to about 60% in under 30 seconds? I keep this in mind when pulling trackside PCVs right after a 3-furlong breeze to avoid overcalling dehydration.
Utility BodyWorn with the MOLLE lock plate and LTE NTP sync gave us signed timestamps and an audit trail that cleared chain-of-custody; the key was forcing a “tag before undock” prompt — caveat: the shirt clip still spins, so mount to MOLLE. @alicia_p98 was the rejection just the missing secure time or also the audio gap?
Spleen — adrenergic contraction dumps a big RBC bolus and can spike PCV from about 32 to about 60 in under 30 seconds, which, , gets overcalled as dehydration all the time. After a 3‑furlong breeze I either wait 10–15 minutes or pair PCV with TP; a normal TP usually screams ‘spleen, not fluid loss’. Nice explainer: https://thehorse.com/152902/splenic-contraction/ — do you wait or pull TP too?