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Urine Occult Blood
Aka: Urine Occult Blood, Urine Dipstick Blood
- See Also
- Microscopic Hematuria
- Adult Microscopic Hematuria Causes
- Hematuria in Adults
- Hematuria in Children
- Interpretation: Normal
- Negative
- Interpretation: Positive (Urine Dipstick with blood)
- Dipstick blood must be confirmed with microscopic exam
- See Microscopic Hematuria for confirmatory exam
- Diagnosis of Microscopic Hematuria: 3 RBCs/hpf
- Causes: False Positive occult blood on Urine Dipstick
- Dehydration
- Exercise
- Hemoglobinuria
- Myoglobinuria
- Non-urinary tract blood source (e.g. Menses)
- Alkalotic urine (pH >9)
- Causes: False Negative occult blood on Urine Dipstick
- Captopril
- Vitamin C supplementation
- Increased Urine Specific Gravity
- Urine pH 5.0 or less
- Proteinuria