Quickfinder COVID-19 / Flu Antigen Tests

Rapid Detection of SARS-CoV-2, Influenza A and B

Self Test (for Individuals Testing at Home)

Instructions (QRI) Tutorial Video
Product Expiration Date

The links above will direct you to the appropriate sections where the instruction files can be accessed. For Pro Test, the files are available near the bottom of this page. If you are unable to download or print them, please contact sales@osangllc.com to request a printed copy at no charge.

3-in-1 Simultaneous detection for your convenience

The most trusted test

The OSANG HEALTHCARE Ltd Co., COVID-19/Flu Antigen Self Test is a lateral flow assay intended for the qualitative detection of SARS-CoV-2 and Influenza type A, B in nasal swab samples collected from individuals within four days of the onset of symptoms. This test is not for use for those without symptoms.

Dual-color precision for easy & accurate testing

  • Enhanced Clarity & PrecisionDual-color system enables precise testing for three different diseases.

  • Easy-to-ReadFour distinct lines with color-coding for non-experts.

  • Streamlined & ReliableSimple steps designed to reduce user error.
Two flat, narrow, rectangular test cassettes placed in a crisscrossed arrangement.
A gloved hand adjusting a microscope in a laboratory setting.

Reliable & comprehensive testing solution

The QuickFinder COVID-19/Flu Antigen Test is designed for the simultaneous detection of SARS-CoV-2, influenza A, and B antigens using nasal swab samples. This versatile test is suitable for both over-the-counter (OTC) self-testing and professional use in CLIA-compliant laboratories.

For the general public, the QuickFinder is intended for individuals aged 14 and older for at-home self-testing, and for those between age 2 and 13 when tested by an adult. Do not use the test if you have had symptoms for more than 4 days or no symptoms at all.

​Both tests emphasize that while positive results indicate the presence of the virus, they should be clinically verified for a definitive diagnosis. Conversely, negative results do not rule out infection and should be considered preliminary, necessitating further confirmation alongside clinical symptoms.

​This product has been cleared by the FDA under 510(k) (K243262) for the detection of proteins from SARS-CoV-2, influenza A, and influenza B. It is not intended for the detection of any other viruses or pathogens. 

COVID-19

Covid-19 virus icon

Sensitivity 90.6% | Specificity 99.4%

INFLUENZA A

Influenza A virus icon

Sensitivity 89.7% | Specificity 98.8%

INFLUENZA B

Influenza B virus icon

Sensitivity 86.0% | Specificity 99.7%

3-in-1 Detection

Simultaneously identifies SARS-CoV-2 and Influenza A & B with precision.
A close-up of a pipette dispensing liquid into a small lab vial

Rapid Results

Get accurate readings in just 15 minutes from a simple nasal swab.
A male scientist holding a small beaker up to eye level

Suitable for Ages 2+

Teens 14+ can self test. Children between 2-13 should be tested by an adult. 
A young girl smiling with her eyes closed, surrounded by other children in a playful setting

Fast simple and accurate how it works

View or Download the Quick Reference Instruction (QRI) and Instruction For Use (IFU)

QuickFinder COVID-19/Flu Antigen Self Test
(for Individuals Testing at Home)

A QuickFinder COVID-19 / Flu Antigen Self Test retail box of 25 tests shown at an angle

You can click to download the instructions steps for use above and print it. If you are unable to print the files, please contact sales@osangllc.com, and we will send a hard copy to you at no charge.

Test results should not be read until after the sample has been added and the test has been allowed to run for 15 minutes, and only test lines that appear at the correct position and in the correct color should be read and interpreted.

Multiple OHC test cassettes aligned on an automated assembly line conveyor belt

How to use

Select video version:
Video Transcript

Storage requirements and test preparation

Store kit between 36-86°F (2-30°C). Ensure all test components are at room temperature before use. ​​​​​Carefully read instructions before performing the test.

**Failure to follow the instructions may result in inaccurate test results.**

A person wearing gloves and a lab coat organizing multiple test cassettes on a workstation filled with laboratory tools and containers
A female scientist wearing a mask, face shield, and protective clothing, pouring red liquid from a container

The most trusted test and provided Materials

The exact number of each item varies by the packaging option selected.

Test Cassette

A flat, narrow, rectangular, plastic test cassette. From top to bottom, it features: a label “COVID-19 slash Flu,” a long oval indentation, a label “O-H-C,” a smaller oval indentation, and a label “droplet icon X 4”

Nasal Swab

A swab in a narrow paper and plastic pouch with peel tabs by the thinner, stick end of the swab. The swab head on the opposite end is soft and rounded

Extraction Buffer Tube with Solution

A narrow cylindrical tube with a wider top end and peelable foil seal, and a small amount of fluid inside

Filter Cap

A small cap with a narrow nozzle and wide base

Test result interpretation

Test results are read and interpreted visually.

  • Easy-to-read Results
  • Large Sample Well
  • Large Results Window
  • Thick Results Lines
  • Bold Results Lines Colors In Blue And Red

Read result at 15-30 minutes with good lighting. Look for lines next to ‘C’ (Control), ‘A’, ‘B’ and ‘S'.

  • ​C = Control (Red line)
  • S = COVID-19 (SARS-CoV-2) (Red line)
  • B = Influenza B (Blue line)
  • A = Influenza A (Red line)

For ease of use, hold test cassette next to the example result images on this page and/or QRI (Quick Reference Instructions).

Invalid Results

If a control line is not visible at “C” after 15 minutes, even if any other line is visible in the results window, THE TEST HAS FAILED and is considered invalid.

All 8 variations of invalid test results are pictured to the left.


STOP: If the test is invalid, repeat the test procedure using a new test kit and sample.

Quickfinder Covid-19/Flu Antigen Pro Test (For professional use)

A female scientist in a laboratory looking into a microscope, wearing safety goggles and blue gloves