Products > Diagnostic tests > Immunochromatographic Tests > Principles

Principles

The test results are shown on Control line (C) and Test line (T) by means of the principles of immunochromatography.

  • The test is positive if both the test line (T) and control line (C) appear.
  • The test is negative if only the control line (C) appears.
  • The test is invalid if neither the test line (T) and control line (C) appear or only the test line (T) appears.
Principles

Description of the test device

Control line (C), Test line (T) and Sample well (S) for dropping are marked on the device. Inside it, the strip is composed of sample pad, conjugate pad, nitrocellulose membrane (test paper) and absorbent pad.