CTX

CTX is a three-letter abbreviation with multiple meanings:

Medical

 * C-terminal telopeptide, a blood serum biomarker that can be measured to assess bone turnover
 * Ceftriaxone, an antibiotic
 * Cefotaxime, an antibiotic
 * Cerebrotendineous xanthomatosis, a genetic disorder
 * Charybdotoxin, a toxin found in scorpion venom
 * Chemotherapy, treatment of cancer with cytotoxic drugs
 * Cholera toxin, a toxin responsible for the harmful effects of cholera
 * Ciguatoxin, a neurotoxin produced by marine dinoflagellates
 * Conotoxin, a toxin found in cone snail venom
 * Crotoxin, toxic compound in snake venom
 * Cyclophosphamide, an anticancer drug

Technology

 * Centrex, a telephone service
 * Citrix Systems, company best known for desktop virtualization software
 * Chuntex Electronic, computer display manufacturer based in Taiwan
 * CTX (camera), on the Mars Reconnaissance Orbiter
 * CTX (computer virus)
 * CTX (explosive-detection device)
 * Collisionless Terrella Experiment, a levitated dipole at Columbia University

Business

 * Caltex, where CTX is the stock symbol for Caltex Australia Limited

Others

 * Concordia University Texas, where 'C' is for Concordia and 'TX' is for Texas
 * Countdown to Extinction, a thrill ride at Disney's Animal Kingdom, now known as DINOSAUR
 * CTX, IATA airport code for the city of Cortland, New York, U.S.A.