Urinalysis is an essential component of clinical pathologic testing. It is very difficult to interpret changes in a chemistry panel (urea nitrogen and creatinine in particular) in the absence of urine, since the kidney and its ability to produce urine can dramatically affect chemistry results. Most of the urine samples we receive are from small animals (dogs and cats). This is because urine is far easier to obtain in these species than large animals. However, in an azotemic animal (high urea nitrogen or creatinine), a urinalysis can really help determine the cause of the azotemia (but is not always conclusive).
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