What does the C and T stand for on a drug test? | U.S ...
If the antigens are not present in the specimen, no colored line will appear in the (T) Test line region, indicating a negative result. As a procedural control, a colored line will always appear in the (C) Control line region, indicating that the test procedure has been performed properly and that test components have operated as intended. Valid Antigen Rapid Test Results Positive Result: Two …
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