Know your COVID-19 antibody status - Everybody is different

  • Reliably monitor an individual’s COVID-19 antibody status
  • Remove the guesswork around immune response and antibody waning
  • Provide peace-of-mind to continue daily life confidently and safely
  • Sensitivity: 98.03%, Specificity: 99.56%

When ordering online you will be directed to our partner website.

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Why choose AbC-19™ Semi-Q Rapid Test?

People have different COVID-19 antibody levels. Therefore, detecting IgG antibodies to the trimeric spike protein correlates with virus neutralising activity and confirms immune response.

  • Semi-quantitative results in 20 minutes
  • No swabbing. Sample taken from small finger prick of blood
  • Easy to use. Less frequent testing
  • 24/7 international customer support helpline
  • Instructions in multiple languages
  • UK manufactured. UKCA & CE marked for use by healthcare professionals or trained lay users
  • Full training available to healthcare professionals or lay users
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Why use AbC-19™ Semi-Q Rapid Test?

Deploying routine COVID-19 antibody status testing offers multiple benefits:

  • Empowers individuals to make informed decisions about professional and social interactions based on their own antibody status
  • Enables employers to support employee health and well-being in accordance with their individual immune response
  • Helps to support and shape COVID-19 strategies for live music and sporting events, workplaces, and travel
  • Support SARS-CoV-2 serological studies

Who should use AbC-19™ Semi-Q Rapid?

  • Airlines and Airports
  • Border control
  • Events organisers
  • Governments
  • Healthcare agencies
  • Health Insurers
  • Pharmacies
  • Researchers
  • Seaports
  • Workplaces

Large order enquiries and distributor requests

For bulk orders and distribution enquiries click the green button below.

Contact Us

Frequently Asked Questions

  • AbC-19™ Semi-Q Rapid Test is a lateral flow antibody test. From a finger-prick sample of blood, the test detects the SARS-CoV-2 IgG  antibodies to the full trimeric spike protein produced in response to the virus or following vaccination.

    By comparing test line intensity with a scorecard, semi-quantitative results are obtained . The intensity of the line, which can be seen visually, is proportional to the amount of IgG antibodies present in the finger-prick blood sample with higher levels of antibodies producing a stronger test line.

    AbC-19™ Semi-Q Rapid Test can determine the levels IgG antibodies produced following infection with COVID-19 virus or vaccination. It will not confirm if you are currently infected by the virus.

  • When comparing the test line intensity against the scorecard, the line intensity correlates with the data table in the ‘How have the scorecard values been generated?‘ section below. A positive result showing a line intensity between 1 and 10 on the scorecard will provide and indicative  level of IgG antibodies to the full trimeric spike protein of SARS-CoV-2.

    Regularly monitoring antibody levels will indicate when antibody levels drop and therefore allow people to interpret their level of risk. With this information people can make informed decisions about modifying behaviour. Determining who and when people are at risk allows governments to guide on vaccine deployment to the most vulnerable. For workplaces, understanding who is most at risk helps to shape return-to-work and/or health and safety policies.

  • The scorecard provided within the AbC-19TM Semi-Q Rapid Test kit enables the signal intensity observed on the test line to be interpreted as an antibody concentration in units/ml, with a measuring range of between 0-16000 units/ml. Line intensity values were assigned in accordance with the WHO Reference panel.

    C-Line T-Line Score Indicative concentration units/ml Result
    X Not Applicable 0 Negative
    1 31 Positive
    2 63 Positive
    3 125 Positive
    4 250 Positive
    5 500 Positive
    6 1000 Positive
    7 2000 Positive
    8 4000 Positive
    9 8000 Positive
    10 16000 Positive
    X X or ✓ Not Applicable Not applicable Invalid
  • The body produces antibodies targeting specific parts of the SARS-CoV-2 (COVID-19) virus with the Nucleocapsid protein and the Spike protein being of importance in the context of antibody tests. The coronavirus nucleocapsid protein is a multi-functional protein whereas the spike protein is integral in penetrating human cells and initiating infection.

    Detecting IgG to the trimeric spike protein correlates with neutralising activity, confirming immune response
    and providing the end user with peace-of-mind on their antibody status.

    • Healthcare professionals, such as doctors, nurses, pharmacists and healthcare workers.
    • Laboratory professionals
    • Trained lay providers in workplaces, schools or universities for example. (Training packages available. Contact our team)

    This SARS-CoV-2 IgG antibody test is CE marked and meets UK and European Union (EU) health and safety requirements.

    • AbC-19™ must be administered and interpreted by a healthcare profession or a trained lay person.
    • Training for lay users can be provided remotely (Duration: 1-2 hours).
    • Following successful completion a certificate is provided confirming the lay user as a professional user for a period of 12 months.

    Contact our team

  • The line closest to the sample hole is the test line (T-line). The presence of a T-line alongside a C-line is a POSITIVE result, the absence of a T-Line alongside a C-line is a NEGATIVE result.

  • 25 x AbC-19™ Rapid Tests
    30 x Lancets
    30 x Test Solution Vials (containing 30 units)
    30 x Blood Collectors
    25 x Waste Bags
    1 x IFU (Instructions for Use)

    Scorecard included

  • For assistance when using and interpreting AbC-19™ please contact our helpline:
    Tel: +44 (0) 2890 394 258

    Support lines are open 24 hours, seven days a week

    Note: questions about ordering or quotations must be directed to

  • Payment accepted in GBP (£), USD ($) and EUR (€) via BACS, Credit Card or Debit Card. Orders can be placed via +44 (0) 1904 406082 or email

    Delivery timelines depend on order size and shipping locations. Shipping costs are in addition to the cost of the tests and calculated before despatch. All orders are tracked.