Your Cart
View/Edit Cart
Checkout Now



EWB COVID-19 Rapid Antigen Test Kit (Saliva) is a colloidal gold-based lateral flow immunoassay intended for the qualitative detection of SARS-CoV-2 nucleocapsid antigen in saliva specimens from individuals who are suspected of COVID-19. The COVID-19 viral antigen is detectable in saliva samples during the acute phase of infection.

The results are for the identification of SARS-CoV-2 antigen. Positive results indicate the presence of viral antigens, but correlation with patient history and other diagnostic information is necessary to determine the infection status. Positive results do not rule out bacterial infection or co-infection with other viruses.

Negative results do not rule out SARS-CoV-2 infection and should not be used as the sole basis for treatment or patient management decisions, including infection control decisions. Negative results should be considered in the context of patient’s recent exposures, history and the presence of clinical signs and symptoms consistent with COVID-19, and confirmed with a molecular assay, if necessary, for patient management.

EWB COVID-19 Rapid Antigen Test Kit (Saliva) is for in vitro diagnostic use only.

Available in full sets of:

  • 1 test
  • 2 tests
  • 5 tests

Special Limited Time Offer:
Buy 10 tests for only $290!

*Free shipping with minimum purchase of 10 sets

*This product only accepts Direct Bank Transfer payment method

  • Description

    Product Description

    Test process

    1. Clean the mouth 30 minutes before collecting a saliva sample. Do not eat, drink, smoke or chew gum within 30 minutes before giving your sample. Place the tip of the tongue against the root of the upper or lower jaw to enrich the saliva.
    2. Gently spit into the paper.
    3. Remove the cartridge from the package and place it on a clean, flat and dry surface. Label the cartridge with patient’s name.
    4. Remove the dropper lid from the extraction tube containing extraction buffer.
    5. Use a disposable pipette to transfer the saliva (filled to the bottom of the suction head) into the extraction tube.
    6. Tighten the dropper lid and mix the contents gently by inverting the tube several times.
    7. Leave the mixture in the extraction tube to stand for 1 minute.
    8. Remove the white cap on the top of the dropper lid and add two drops (around 7uL) of the well-mixed sample into the sample well of the cartridge.
    9. Leave the sample-loaded cartridge at room temperature for 12 minutes.
    10. Read the results after 12 minutes of incubation. Do not interpret results after 15minutes (from addition of the sample).


    1. The EWB COVID-19 Rapid Antigen Test Kit (Saliva) is only for qualitative detection of the SARS-CoV-2 antigen.
    2. Results obtained with this kit should not be used as the sole criteria for diagnosis and treatment of SARS-CoV-2 infection. The clinical symptoms, medical history, epidemiological information and other laboratory findings of patients should always be taken into consideration.

    Warning and Precautions

    1. Do not use if the test kit is damage or beyond expiration date.
    2. Do not use perforated paper pouch.
    3. Extraction Buffer of different lots are not interchangeable. The results may not be reliable if reagents from different lots are mixed or used together.
    4. The reagent cartridge is for single test and cannot be reused.
    5. Do not eat the desiccant.
    6. Treat all specimens as potentially infectious. Be cautious and follow universal precautions in sample collection and handling.
    7. The samples, used reagents and consumables are medical waste which are potentially hazardous and should be disposed of in accordance with national and local regulations.


    EWB COVID-19 Rapid Antigen Test Kit (Saliva) can be conveniently used for home testing. However, if positive results are shown, patients should contact their respective health authorities for a compulsory affirmative secondary testing with PCR (gold standard) testing.

    Download Brochure: ENGLISH | CHINESE
    Download User Manual

  • Additional information

    Additional Information

    Weight N/A

    Special offer: 10 test, 1 test, 2 tests, 5 tests