What do the C and T on the pet test kit stand for?

In pet testing kits, the C line generally refers to the quality control line (reference line), and the T line refers to the test line.

After the test, if the C line and the T line appear red lines together, it indicates that it is positive, indicating that it has been infected and needs symptomatic treatment as soon as possible; If only one C-line appears, it is negative and can be observed.