Can a urine dysmorphic RBC test really tell if the blood in my urine is coming from my kidneys or the urethra? I had results showing 1012 cellshpf in my urine, but when I did the test again 4 days later, it dropped to 12 cellshpf. Does this mean it was a false reading, or could the sample have been off? I'm a bit confused about what to make of these results.

Understanding Dysmorphic RBCs in Urine

• Dysmorphic RBCs suggest kidney-origin bleeding, unlike uniform RBCs from the urethra.

Interpretation of Urine RBC Counts

• A high RBC count (e.g., 1012 cells/hpf) dropping to 12 cells/hpf may indicate transient bleeding, sample issues, or lab errors.

Reliability of the Test and Sample Collection

• Proper sample collection is crucial. Factors like hydration and handling can affect results.

Next Steps and Medical Advice

• Consider follow-up testing or consult a urologist/nephrologist. Additional tests like repeat urine microscopy or imaging may be needed.

Summary and Reassurance

• Fluctuations in results can occur. Further evaluation is key to understanding the cause and ensuring proper care.