What is the role of lab testing in the workup of hydronephrosis and hydroureter?

Updated: Dec 16, 2020
  • Author: Dennis G Lusaya, MD; Chief Editor: Bradley Fields Schwartz, DO, FACS  more...
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Urinalysis is used to assess for signs of infection. Pyuria suggests the presence of infection. Microscopic hematuria may indicate the presence of a stone or tumor.

Complete blood cell count may reveal leukocytosis, which may indicate acute infection.

Serum chemistry studies can reveal an elevation of blood urea nitrogen (BUN) and creatinine levels, which may be the result of bilateral hydronephrosis and hydroureter. In addition, hyperkalemia can be a life-threatening condition.

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