Elevated erythrocyte (red blood cell) levels in the body can manifest with symptoms such as headache, abdominal pain, blurred vision, fatigue, easy bruising, and sleep disturbances. An erythrocyte test is performed to evaluate changes in red blood cell count in the blood and is an important part of a complete blood count, often requested for the diagnosis of various diseases.

The presence of erythrocytes in urine (hematuria), on the other hand, can be due to causes such as kidney stone formation, passing renal calculi, urinary tract infections, various kidney diseases, benign prostatic hyperplasia, kidney cancer, prostate cancer, trauma, and febrile illnesses. If bleeding (erythrocytes) in the urine is accompanied by symptoms such as pain, fever, nausea, and difficulty urinating, this condition requires detailed medical investigation. After diagnosis, an appropriate treatment plan is determined, taking into account the patient's current medications and existing medical conditions.