HOW DOES IT WORK?
The system is very easy to use in 5 steps:
- First we activate the working electrode of the screen-printed electrodes with the activating nanomaterials
- Then we completely prepare the electrode and apply it to the device
- Then we directly add 100 µL of buffer sample, blood or saliva on it
- Then we perform DPV analysis of the device Now we can
- Now we can get the result after 1 minute!
The sensor has 100% sensitivity and 85% specificity at the cutoff point of 0.2185 µA, but the sensitivity will decrease; this shows that the sensor could be a fast screening platform or diagnostic kit for safe detection of people with COVID-19.
HOW DO YOU CALIBRATE?
We first provide pure virus antigen with a known concentration; then, piggyback several dilutions of the virus into the buffer to obtain its unique electrochemical peak. Considering it as a positive control, the intensity of the peak corresponds to the virus concentration in the medium.
