GBT COVID-19 IgM/IgG Rapid kit is an immunoassay kit for the rapid and differential detection of immunoglobulin G(IgG) and Immunoglobulin M(IgM) against severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) in human serum, plasma, and whole blood.

lgM/lgG Antibodies RAPID TEST

lgM/lgG serological tests offer some advantages over RT-qPCR, Firstly, serological tests detect human antibodies (proteins belongs to the immunoglobulin class) which are known to be much more stable than viral RNA. As a result, lgM/lgG serological specimens are less sensitive to spoilage during collection, transport, storage and testing than RT-qPCR specimens.
Secondly, because antibodies are typically uniformly distributed in the blood, serological specimens have much less variations than nasopharyngeal viral RNA specimens and can be easily collected. Furthermore, unlike RT-qPCR, serological tests can detect past infection because virus-specific antibodies (unlike viral RNA) can persist in the blood for several weeks/months after onset of symptoms and you get the clear answer with GBT COVID-19 lgM/lgG RAPID KIT.

Days Since Infection *Disclaimer : this chart is for illustrative purposes only

Test resultsClinical Significance
+--Patient may be in the window period of infection.
++-Patient may be in the early stage of infection.
+++Patient is in the active phase of infection.
+-+Patient may be in the late or recurrent stage of infection.
-+-Patient may in the early stage of infection. RT-qPCR result may be false-negative.
--+Patient may have had a past infection, and has recovered.
-++Patient may be in the recovery stage of an infection, or the RT-qPCR result may be false-negative.

Clinical Significance of an lgM/lgG Serological Test Result


GBT COVID-19 IgM/IgG RAPID KIT is a gold nanoparticle based immunochromatography test kit that qualitatively measures IgM and IgG antibodies from COVID-19 in whole blood, serum or plasma. The kit is accurate, easy to use, and results can be checked with the naked eye within 10-15minutes. .



• Model No.   GBT-COVID20

• Quantity      20 Tests/KIT

• Sample        Venous/Finger blood, Plasma and Serum

• Test time     Reading in 10-15 min

• Storage       2℃ ~ 30℃

• Expiry         18 months since manufactured


When all the 3 lines are shown at test 1, test 2 and Control, then the test result is "POSITIVE" Even in case 2 lines are shown at control and test 1 or Control and TEst 2, the test result is "POSITIVE" too.

When the contril line does show up without 2 test lines, the test result is "NEGATIVE".

* If the line is not shown up at the control line though test is fulfilled, then that test cassette and test result are invalid, at that time, you have to re-test with new test cassette.