If be in hematic travel sex of pyelonephritis inchoate or when uric road block, the patient has road of clear make water to affect a symptom, but make water germiculture is electronegative.

• 如在血行性肾盂肾炎的早期或尿路梗阻时，病人有明显尿路感染症状，但尿细菌培养阴性。