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add-on testA term for a new-test request which is added to a previously collected specimen—e.g., blood—on which the previously requested tests were already performed.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
add-on testAdd test, add-on Lab medicine An order for a test that is added to a previously collected specimen–eg, blood. Cf Reflex testing.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.