Occult Blood Benzidine Test
Occult Blood Benzidine Test, A sensitive test for the presence of blood (as in urine or feces) based on the production of a blue color upon contact with a solution of benzidine, hydrogen peroxide, and glacial acetic acid.
A Pinch of benzidene Powder + 3ml glacial acetic acid + 3ml H2 Or
- Part 1 1 ml Urine
- Part 2 1 ml DW
Observation:
The blue or bluish-green color appears immediately.
Interference:
- Blood is present,
- second Part: Control tube no change in color
Benzidine test Interpretation:
Hematuria:
- Acute glomerulonephritis Trauma to Urinary Treat, Urine Stones.
- Chowly red
Hemoglobinuria:
- Excretion of free Hb followed by homily Malaria, Severe burns, Hemolytic jaundice, and Enteric fever.
- Clear red.
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