The phrase "laboratory abnormalities" refers to unusual or abnormal results found when testing samples in a laboratory. It means that something is not normal according to the tests conducted in a lab. Full definition
Other cases may begin with laboratory abnormalities found while investigating other problems or with presurgical or routine screening tests. (hallettvet.com)
Overall, the side effects experienced by the patients were consistent with that of melanoma patients, except for the higher rates of weight loss, dysgeusia (distortion of taste), anemia (lack of iron), increased creatine levels, and hepatic laboratory abnormalities. (sciencedaily.com)
Laboratory abnormalities consistent with hyperadrenocorticism are common although definitive biochemical proof of the disease is often lacking in dogs with SARD. (eyespecialistsforanimals.com)