** Shares of genetic testing firm Tempus AI TEM.O fall 16.9% to $57.8 premarket
** Co posts Q4 revenue of $200.7 mln, missing analysts' estimates of $203.1 mln as per data compiled by LSEG
** TEM reports Q4 net loss of 18 cents/share vs analyst est of 20 cents/share
** Co forecasts 2025 revenue to be $1.24 bln; analysts on average expect annual revenue to be $1.04 bln
** Stock has risen 72.8% since its Nasdaq debut in June
(Reporting by Padmanabhan Ananthan)
((Padmanabhan.Ananthan@thomsonreuters.com;))