COVID-19 Antigen Rapid Test Cassette (Collidal Gold)Saliva

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COVID -19 Antigen Rapid Test Cassette (Colloidal Gold)



1piece/box  or 28pieces/box

Box size for 1 piece per box: 180*65*15mm

Box size for 28pieces per box: 190*125*75mm



This product is suitable for the qualitative detection of novel coronavirus, or  COVID- 19, in Saliva. It aids in the diagnosis of infection with novel coronavirus.



The novel coronaviruses (SARS-CoV-2) belong to the β genus. COVID- 19 is an     acute respiratory infectious disease. People are generally susceptible to infection.    Currently, the patients infected by the novel coronavirus are the main source of       infection; asymptomatic infected people can also be an infectious source. Based on the current epidemiological investigation, the incubation period is 1 to 14 days,       particularly 3 to 7 days. The main symptoms include fever, fatigue, and dry cough. Nasal congestion, runny nose, sore throat, myalgia, and diarrhea are also found in   some cases.



The COVID -19 Antigen Rapid Test Cassette is an immunochromatographic membrane assay that uses highly sensitive monoclonal antibodies to detect nucleocapsid protein from SARS-CoV-2 in Saliva samples. The test strip is composed of the following parts: namely sample pad, reagent pad, reaction membrane, and absorbing pad. The reagent pad contains the colloidal-gold conjugated with the monoclonal antibodies against the nucleocapsid protein of SARS-CoV-2; the reaction membrane contains the secondary antibodies for nucleocapsid protein of   SARS-CoV-2. The whole strip is fixed inside a plastic device. When the sample is  added into the sample well, conjugates dried in the reagent pad are dissolved and migrate along with the sample. If  SARS-CoV-2 antigen presents in the sample, a complex formed between the anti-SARS-2 conjugate and the virus will be captured by the specific anti-SARS-2 monoclonal antibodies coated on the test line region  (T). Absence of the T line suggests a negative result. To serve as a procedural control a red line will always appear in the control line region (C) indicating that proper volume of sample has been added and membrane wicking has occurred.



1. Disposable test device

2. Disposable plastic saliva collection bag


Other device needed by not provided:




Please read all the information in this package insert before performing the test.

1.  For  in-vitro diagnostic use only. Do not uses after the expiration date

2.  The test should remain in the sealed pouch or closed canister until ready to use.

3. All specimens should be considered potentially hazardous and handled in the same manner as an infectious agent.

4.  The used test should be discarded according to local regulations



1. Store as packaged in the hermetically-sealed bag at the temperature (4-30℃ or 40-86℉) and avoid direct sunshine. The kit is stable within the expiration date printed on the labeling.

2. Once the sealed bag is opened, the test should be used within one hour.

Prolonged exposure to hot and humid environments will cause product  deterioration.

3. The lot number and the expiration date are printed on each sealed bag.



Allow the test device and specimens to equilibrate to room temperature (15-30℃ or 59-86℉) prior to testing.


1.Collect at least 2 ml fresh saliva in a single use disposable plastic bag.

2.Open aluminum foil bag & take out the test cassette.

3.Take off  the cassette cap.

4.Immerse the absorbing pad into the saliva bag and wait 2 minutes.

5.Remove the test card from saliva cup, then put back the cap and  lay down the test cassette on a flat surface.

6.Interpret the test result in 15 minutes, do not read the test result after 20 minutes.



1.Dont put it in mouth.

2.Dont use saliva with blood.

3.If the fluid does not move, add 1 ml of drinking water to the plastic cup with saliva, mix the water and saliva evenly , and  then put the absorbing pad back into the bag to absorb more saliva.



Positive(+): Both of T and C lines appear within15minutes.                  Negative(-): C line appears while no T line appeared after 15 minutes.

Invalid: If the C line does not appear, this indicates that the test result is invalid, and you should retest the specimen with another test device.



1.COVID -19 Antigen Rapid Test Cassette is a preliminary qualitative test, herefore, neither the quantitative value nor the rate of increase in COVID -19  can be determined by this test.

2.A negative test result may occur if the antigen concentration in a sample is below the detection limit of the test. The detection limit of the test was determined with recombinant SARS-CoV-2 nucleoprotein and is 10 pg/ml.

3.The efficacy of the SARS-CoV-2 antigen test cassette has only been evaluated by the methods described in this package insert. Changes in these procedures may alter the performance of the test.

4.False negative results can occur when a sample is inadequately detected, transported or handled.

5.False results may occur if the samples are tested more than an hour after sampling. Samples should be tested as soon as possible after sampling.

6.Positive test results did not exclude co-infection with other pathogens.

7.Negative test results are not intended to reveal other viral or bacterial infections from SARS-CoV-2.

8.Negative results from patients with symptomatic onset after more than seven days should be treated as a presumption and confirmed with another molecular assay.

9.If the differentiation of specific SARS-CoV-2 strains is necessary, additional tests are required in consultation with public or local health authorities.

10.Children may tend to secrete viruses longer than adults, which may lead to different sensitivities between adults and children and difficult comparability.

11.This test provides a presumptive diagnosis for COVID -19. A confirmed  COVID -19 diagnosis should only be made by a physician after all clinical and laboratory findings have been evaluated.



1. COVID -19 Antigen Rapid Test Cassette is only applicable to Saliva samples.

Blood, serum, plasma, urine, and other samples may cause abnormal results. If any  sample tests positive, please see your local healthcare authority for further clinical diagnosis and reporting of results. 2. Make sure that the absorbing pad is fully moistened.

3.  Positive results can be judged immediately if C line and T line appear , and negative results need to spend full 15minutes.

4. The test device is a disposable product and will contain bio hazards after use.

Please properly dispose of the test devices, specimens, and all collection materials after use.

5. Must use prior to the expiration date on product labeling.

6. If   part of the test membrane containing the reagents is out of the test

window, or more than 2 mm of filter paper or latex pad is exposed in the

test window, do not use it because the test results will be invalid. Use a new

test kit instead.

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