RT Book, Section A1 Rosenberg, Eric A2 Salardini, Arash A2 Biller, José SR Print(0) ID 1127044211 T1 Interpretation of Common Laboratory Tests T2 The Hospital Neurology Book YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071845830 LK neurology.mhmedical.com/content.aspx?aid=1127044211 RD 2024/10/13 AB Diagnostic testing is used to evaluate symptoms or abnormal physical examination findings. Testing should be ordered to assess the severity or stability of a medical problem or to evaluate an abnormal symptom or sign detected during a medical interview and examination. Routine testing or repeated testing of asymptomatic individuals with previously normal test results does not accurately predict which patients will develop complications but it does increase resource use and healthcare costs.