Remove the protective coating from the test-slide.
During endoscopy take biopsies specimen from the stomach lining.
Put a biopsy specimen on a slide.
Wait for 3 minutes.
Determine the color change around the biopsy on the slide.
If the color of the spot remains yellow, the test is negative.
If the color of the spot is blue, the test is positive.
The higher the urease activity of H.pylori is, the quicker does the spot appear and
the bigger it is.
See also the complete instruction.