Record the test result that is associated with the color block that most closely matches the color of the test in the tube. Remember that the final color may not be the test result if the "pass through" phenomenon occurred. Test results should be recorded according to your laboratory's procedure. Laboratories may choose to record results as 1%, 2%, 3%, etc; 1+, 2+, 3+, etc; or 100mg/dL, 200mg/dL, 300mg/dL, etc.

The result of the test in the top image is negative, and the result of the test in the bottom image, reported as a percentage, is 2%. (Note: Colors in the photograph may vary slightly from actual test colors.)