The detection and diagnostic procedures requires Knowledge of what is normal and measuring of the patient's current condition against those norms can assist in determining the patient's particular departure from homeostasis and the degree of departure, which in turn can assist in quantifying the indication for further diagnostic processing. The fact that a patient has sought a diagnostician can itself be an indication to perform a diagnostic procedure. Therefore, in, for example, a doctor's visit, the physician may already start performing a diagnostic procedure by, for example, watching the gait of the patient from the waiting room to the doctor's office even before she or he has started to present any complaints. Even during an already ongoing diagnostic procedure, there can be an indication to perform another, separate, diagnostic procedure for another, potentially concomitant, disease or condition. This may occur as a result of an incidental finding of a sign unrelated to the parameter of interest, such as can occur in comprehensive tests such as radiological studies like magnetic resonance imaging or blood test panels that also include blood tests that are not relevant for the ongoing diagnosis. General components of a diagnostic procedure in most of the various available methods include: Complementing the already given information with further data gathering, which may include questions of the medical history .physical examination and various diagnostic tests. A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. Diagnostic tests can also be used to provide prognostic information on people with established disease .the other specific methods include Clinical diagnosis; Laboratory diagnosis; Radiology diagnosis; Remote diagnosis etc.
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Last date updated on June, 2014