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What's the difference?

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All stages · Demo 184

FeNa mill

Choice prerenal / atn / post. FeNa is 100×(UNa×PCr)/(PNa×UCr). <1% prerenal, >2% ATN. A dry story with a 5.9% is a mismatch.

ChoiceFeNa formula vs story

A dial. Dry membranes with concentrated urine stay under 1%. Muddy casts go magenta. Calling it dry while FeNa is ATN hatches mismatch.

replaykind —fena —

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STANDBY

All 4056 stages

Educational stage on jev.page — not the official TypeSafe console. Live calls go to POST https://api.typesafe.ai/v1/systemone from your browser when you paste a key. Without a key, the stage plays a recorded decision shaped like jev-1.13.0. Jev does not write the UI copy.