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    Buy Rapid Antigen Tests
    GardianT3 Saliva Covid-19 
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​| GardianT3 detects from day one

​The GardianT3 COVID-19 SARS-CoV-2 Rapid Antigen Test is a saliva-based qualitative lateral flow immunoassay intended to detect SARS-CoV-2 nucleocapsid antigens present in human saliva samples in vitro. 

Unlike many other rapid antigen tests, it can also detect Omicron variants including Omicron BA.2, BA.4, BA 5, and BA 2.75. 
Selecting a rapid antigen test that provides an accurate and trustworthy result early provides peace of mind and is the only way to stop potential transmission of Covid-19. 

Covid-19 rapid antigen tests should have an analytical sensitivity (Level of Detection) of under 50 TCID accompanied with a Ct value which states the number of copies of virus per mL. 

The Limit of Detection (LoD) is the lowest concentration of an analyte in a sample that can be consistently detected. The most important thing is that the lower the LoD, the better the rapid test. A low LoD means the test will pick up the smallest trace of infection within the sample taken, meaning the infection will be picked up early.

Gardian T3 Covid-19 Rapid Antigen Tests have a LoD of 10, and unlike other rapid tests can detect infection as early as day one.

| How it works

Peace of mind in only 10 minutes

Whether you need to get tested for travel, work, school or simply peace of mind, the GardianT3 COVID-19 Rapid Antigen Test is an easy to use, one step saliva rapid antigen test with results in only ten minutes.

The GardianT3 Covid-19 Rapid Antigen Test comes with free access to the Self Check App, available for download via the Google Play or Apple Store.

The Self Check App provides users with step-by-step instructions on how to do the test correctly, how to interpret a positive or negative Covid-19 test result and allows the user to share their result with an employer, healthcare professionals, public venues or with anyone they choose.
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It’s easy with GardianT3

It's as easy as one, two, three with GardianT3 Covid-19.

1. Place the swab in your mouth until the test strip starts to turn pink.

2. Put the lid back on and place it on a clean flat surface.

3. Read and record your result after 10 minutes.

The Covid-free digital certificate is valid for 72 hours. The test history passport is also a great way to store or share your Covid-19 test result.

Take the test
​Record the result
​Store or share test results 

Need to share a test result with your employer or healthcare provider? 

Want to get notified when your next rapid antigen test is due?

Want to store the test results and a test history passport?

Want a Covid-free digital certificate to prove your test results?

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​| Get started

Step 1. Download the Self Check App

GardianT3 comes with the Self Check App included; an easy-to-use mobile application available for Google Android or Apple iOS that guides the user through completing a GardianT3 Covid-19 Rapid Antigen Test from home.

The Self Check App helps users understand the rapid antigen test result (positive, negative or invalid test result) and how to record it. Users may also opt to share their result with others, including a doctor or employer.

Once downloaded and registered, the Self Check App includes easy to understand step-by-step instructions on how to use the GardianT3 Covid-19 Rapid Antigen Test kit from home.

So, let's get started...

Download the app

Scan the QR Code or click on the button below that is relevant for your device type to download the Gardian Self Check App for Google Android or Apple iOS.

Apple iOS
Google Android

Step 2. Watch the Instructional Video

Watch the GardianT3 Covid-19 Rapid Antigen Test Instructions For Use (IFU) video below.

Step 3. Read the Instructions for Use

Read the GardianT3 Covid-19 Rapid Antigen Test Instructions For Use (IFU) below. There are two pages total; use the arrows to navigate to the next page.

Step 4. Take the test

When taking the GardianT3 Covid-19 Saliva Rapid Antigen Test, follow the instructions by reading the Instructions for Use (IFU) found inside every GardianT3 Covid-19 box. You can also view the video above, the IFU below or follow the easy step-by-step instructions via the Self Check App.

​| Clinical Resources

GardianT3 detects Omicron variant

The following SARS-CoV-2 variants can be detected with the GardianT3 Covid-19 Saliva Rapid Antigen Test:

  • B.1.1.7 (Alpha) and sub-lineages;
  • B.1.351 (Beta) and sub-lineages B.1.351;
  • P.1 (Gamma) and sub-lineages P.1;
  • B.1.617.2 (Delta) and sub-lineages AY;
  • B.1.1.529 Omicron Variant;
  • BA2 Omicron Variant;
  • BA.4 Omicron Variant; 
  • BA.5 Omicron Variant; and
  • BA.2.75 Omicron Variant.

Instructions for Use

Instructions for Use (IFU) on how to use the GardianT3 Covid-19 Saliva Test


Instructional Video

Instructional video on how to use the GardianT3 Covid-19 Saliva Test


Clinical Evidence

Clinical evidence and data for the GardianT3 Covid-19 Saliva Test


Covid-19 Variants

Research Report on Detection Limit of Wild Type, Delta and Omicron Viruses.


Limit of Detection

Limit of Detection (LoD) for the GardianT3 Covid-19 Saliva Test


​| Frequently Asked Questions (FAQ's)

GardianT3 FAQ's

Click on the frequently asked question below in order to reveal the answer for that question.
What is the GardianT3 SARS-CoV-2 Rapid Antigen Test?

GardianT3 COVID-19 SARS-CoV-2 Rapid Antigen Test is a saliva based lateral flow immunoassay self test intended to detect SARS-CoV-2 nucelocapsic antigens present in human saliva samples in vitro. This rapid antigen test is intended to be used in symptomatic individuals meeting the case definition for COVID-19 within the first 7 days of symptom onset, and to test individuals suspected of COVID-19 due to contact with a confirmed COVID-19 case or probable cases, and at-risk health workers. 

Unlike other rapid antigen tests, GardianT3 can detect Covid-19 from day one, before you are infectious. Positive results are indicative of the presence of SARS-CoV-2. Positive results do not rule out a bacterial infection or co-infection with other viruses. Negative results do not rule out SARS-CoV-2 infection. Individuals who test negative and continue to experience symptoms should seek follow up care from their local state or territory COVID-19 testing centre.

What is the Therapeutic Goods Administration (TGA) Listing Number?

The Therapeutic Goods Administration (TGA) listing number is 384538.

Can I use the test on my whole family?

Yes, the GardianT3 Covid-19 saliva rapid antigen test is an easy to use self test suitable for all ages from 4 years old. It is also suitable for those living with a disability.

Can the GardianT3 rapid test detect Omicron?

Yes. The GardianT3 Rapid Antigen Test can detect Omicron Variant (B.1.1.529) and Omicron Variant BA2. Gardian are also pleased to announce that based upon new (clinical and analytical) evidence received, GardianT3 Covid-19 Rapid Antigen Tests can detect the latest Omicron Variants BA 4, BA 5, and BA 2.75, with an ongoing Limit of Detection of 10 TCID50/ml.

It’s taking a long time for the test window to change colour, what have I done wrong?

The instructions state 60 seconds, however this may take less time for individuals who produce more saliva or longer for individuals with a dry mouth. Every individual will produce saliva at different rates. If you have a dry mouth, it is safe to have a drink or water or use Biotene oral rinse or spray to assist in producing saliva.

When is the best time to do the saliva test?

It is recommended to conduct the GardianT3 Covid-19 saliva test first thing in the morning before you eat, drink or smoke.

Will eating or drinking affect my test result?

It is recommended that you don't eat, drink, or smoke for at least 30 minutes prior to conducting the GardianT3 Covid-19 rapid test.

How do I use the GardianT3 saliva test?
The GardianT3 Covid-19 saliva test is a simple and easy to use rapid antigen test. Read the Instructions for Use (IFU) and follow the instructions via the Gardian Self Check App to assist you when completing the test. To do the test, put the swab in your mouth and keep it there for 60 seconds (or until the test strip starts to turn pink). Then take it out of your mouth, put the lid back on and place it on a clean flat surface. Wait for 10 minutes then record the result. The Covid-free digital certificate and test history passport is a great way to store or share your results. 
How do I know if I have generated enough saliva for the test to work?

You need to generate enough saliva until the rapid antigen test strip starts to turn pink. In some cases, this can take up to 90 seconds. You have generated enough saliva as soon as the test strip starts to turn pink.

When will my test results be ready?

Test results are ready in 10 minutes. Do not read results after 20 minutes, this will deem the test result invalid. 

What happens if I test positive for Covid-19?

A positive Covid-19 test result means it is very likely you have Covid-19. Refer to your relevant health authority for advice on whether a PCR test is required to confirm your rapid antigen test result, follow your relevant State or Territory guidelines for up to date self isolation rules and regulations and report your result. You can call the national Coronavirus hotline on 1800 020 080, 24 hours per day, 7 days per week.

What should I do if I get a negative Covid-19 test result but have symptoms?

A negative Covid-19 rapid test result may mean that the viral load is too low to be recognised by the rapid antigen test. If you have symptoms but have produced a negative test result, self isolate and repeat the test in 1 - 2 days. Follow the advice from your relevant government health authority.

Can I use the Covid-19 rapid test more than once?

No. The GardianT3 Covid-19 Rapid Antigen Test kit is single use only.

How do I store the test kit?

The GardianT3 Covid-19 Rapid Antigen Test kit should be stored away from direct sunlight, moisture and heat and stored at between 2 – 30 degrees celsius. Make sure the test does not freeze. 

I’ve opened the test. Do I need to use it straight away?

Once the GardianT3 Covid-19 Rapid Antigen Test has been removed from the foil pouch, it must be used within the one hour.

Is it ok to carry out the rapid test after the expiry date?

No, always check the expiry date prior to carrying out the rapid antigen test.

The packaging on the test kit is already opened, is it still ok to use?

No, please discard the rapid antigen test. Before carrying out the test please inspect all of the contents and if there are any signs that the packing has been opened or tampered with, do not use it.

Is it ok to suck the absorbent pad (saliva collector) on the test kit?

No, please don’t suck on the saliva collector. Allow saliva to build up in your mouth naturally and push saliva onto the saliva collector.

What do I do if I can’t see the test window?

Please ensure you have placed the rapid antigen test kit the correct way up.

How do I dispose of a used test kit?

Please place the rapid antigen test cassette into the biohazard waste bag provided and make sure the bag is sealed before disposing of it in your household waste.

What is the Limit of Detection (LoD)?

Limit of Detection (LOD) is defined as the lowest concentration of an analyte in a sample that can be consistently detected with a stated probability (typically at 95% certainty). The Limit of Detection for the GardianT3 SARS-CoV-2-Antigen Test is 10 TCID 50/ML.

Can the rapid test detect different variants of Covid-19?

Yes, please see the 'Clinical Resources' section above for more information.

Do any substances interfere with the rapid test?
The following substances or instances do not interfere with the GardianT3 rapid test: Pregnancy, Mucin, Whole Blood, Icteric (Bilirubin), Rheumatoid factor, Triglycerides, Haemoglobin, Anti-nuclear antibody, Total IgG, Total IgM, Total IgA, Mupirocin, Tamiflu (Oseltamivir Phosphate), Fluticasone Propionate, Fluconazole, Zincum gluconium (i.e., Zicam), Alkalol, Phenol, Phenylephrine hydrochloride, Oxymetazolin hydrochloride, Cromolyn, Oxymetazoline, Galphimia glauca,  Sabadilla, Albuterol, Acarbose, Oseltamivir, Chlorpheniramine, Diphenhydramine, Glimepiride (Sulfonylureas), Chlorothiazide, Acetylsalicylic acid, Amoxicillin, Ibuprofen, Beclomethasone, Indapamide, Flunisolide, Guaiacol glyceral ether, Biotin, Zanamivir, Tobramycin, Sulfur, Ribavirin, Ephedrine, Benzocaine, Menthol, Budesonide, Triamcinolone, Dexamehtasone, Sodium chloride with preservatives, Lopinavir, Ritonavir, Chloroquine phosphate and Ivermectin.
How do I know that the rapid test was done correctly?
A red line will appear in the control area (C) if the rapid antigen test has been done correctly. If the red line is NOT VISIBLE in the control area (C), this is an INVALID test result. You may have performed the test incorrectly. Carefully read the Instructions for Use and repeat the test with a new test kit.
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