Cystinuria
Alternative Names
Stones - cystine; Cystine stonesSymptoms
- Blood in the urine
- Flank pain or pain in the side or back
- Usually on one side; rarely felt on both sides
- Often severe
- May get increasingly worse over days
- Pain may also be felt in the pelvis, groin, genitals, or between the upper abdomen and the back.
Exams and Tests
The disorder is usually diagnosed after an episode of stones. Analysis of the stones shows they are made of cystine.
Tests that may be done to detect stones and diagnose this condition include:
- Abdominal CT scan, MRI, or ultrasound
- Intravenous pyelogram (IVP)
- 24-hour urine collection (shows high levels of cystine)
- Urinalysis (may show cystine crystals)
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