The COVID-19 Antigen Rapid Test Kit (Saliva) is a lateral flow immunoassay intended for qualitative detection of nucleocapsid protein antigen in oropharyngeal saliva specimens from individuals suspected of COVID-19 by their healthcare provider within the first seven days of symptom onset.


It is an immunochromatographic membrane assay that uses highly sensitive antibodies to detect SARS-CoV-2 nucleocapsid protein from oropharyngeal saliva specimens.

SARS-CoV-2 specific antibodies  are immobilized onto the test region of the membrane and combined with other reagents/pads to construct a test strip.


The COVID-19 Antigen Rapid Test Kit (Saliva) is intended for use by medical professionals or trained operators who are proficient in performing rapid lateral flow tests.


Individually packed test devices

Each device contains a strip with colored conjugates and reactive reagents pre-spreaded at the corresponding regions

Extraction tube

For specimens preparation

Extraction buffer

For specimens extraction


For placing extraction tube

Nasal Swab

For specimens collection

Package insert

For operation instruction


[Specimen Preparation]

1. Spit the saliva through the funnel to the 300ul mark on the collection tube
2. Squeeze all the disposable diluent into the lysis tube
3. Close the lid and shake well to mix
4. Add 3 drops of sample



1.  Inadequate specimen collection or improper specimen handling may yield a false result.

2. Posterior oropharyngeal saliva : Perform hand hygiene with soap and water/alcohol-based hand rub.Put the funnel on the tube. Make a "Kruuua" noise from the throat to clear the saliva from deep throat, then spit saliva into the funnel to the fill line 300ul on the tube. Avoid any saliva contamination of the outer surface of the funnel.

3.  Optimal timing of specimen collection:After getting up and before brushing teeth,eating or drinking.

4.  The test should be performed immediately after the sample is collected.Do not leave the sample at  room temperature for more than 2 hours.Specimens may be stored at -20℃ for up to 1 month prior to test.

5.  If Specimens are to be transported, they should be packed in compliance with local regulations covering the transportation of etiological agents.

6.  If samples are stored at -20℃ they must be returned to room temperature,thawed completely and fully mixed prior to testing. The samples can be frozen and  thawed once and repeated freezing and thawing should be avoided.