*3.4.2. Fluorogenic reporters*

Many modern immunoassays are performed by the use of fluorogenic reporters, and the protein microarrays are the best example where these labels are being used [18, 19].

### *3.4.3. Electrochemiluminescent tags*

Electrochemical tags are the labels which emit light as a response of electric current, and the chemiluminescence is detected [20].
