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For veterinary liquid, use the syringe to remove a small sample from the bottle of the drug to be tested using the method shown in Fig 15.5. Remove the cassette from its foil cover and remove the plastic cap to expose the absorbent tip. Saturate the absorbent tip of the dipcard with the veterinary liquid being tested and replace the plastic cap. Read the results of the test off the dipcard at 5 minutes. Do not interpret the results after 10 minutes.
In the case of the powdered product, dissolve a small amount of powder in a few ml of distilled water. Saturate the absorbent tip of the dipcard and proceed as above.
Reading the Test (Fig 15.8) Negative Result: Two lines appear. A red line in the control region (C), and a red or pink line in the test region (T).
Positive: One red line in the control region (C). NO line appears in the test region (T). The absence of a test line indicates a positive result for Nembutal.
Invalid: NO line appears in the control region (C).