You may reschedule or cancel your appointment at any time prior to your appointment by using the links in your appointment confirmation email. There is no penalty for doing so, but we ask that you reschedule or cancel your appointment as soon as you become aware of the change in your plans, so that the appointment slot can be assigned to another traveler.

RT-PCR results are available in about 1 hour after sample collection.
Antigen and Antibody test results are available in about 30 minutes after sample collection

You can access your results by login into our online portal: www.liliumdiagnostics.com/login (or by clicking the login button that is located on the upper-right corner of our website). Your Certificate and Test Report will be available there for 5 days after you took your test, after which they are deleted (the link to the Certificate and Test Report pages have a special security feature where they are generated by a random number generator with trillions of possible combinations, while still allowing you to share the link with others if needed over the 5 day period). We recommend that you print the Certificate and Test Report if you will travel.

If you cannot find your results please email us at info@liliumdiagnostics.com so we can help you to retrieve your results. We monitor our emails until 9:00 p.m. daily.

Some destinations (e.g. Mexico) do not require a test prior to your arrival in the country. Please check with your airline or the embassy of the country you are traveling to if you need a test. If you need a test, please check how many hours before departure or arrival you need to take the test. We are not responsible if you booked an antigen test when you need a PCR test, or booked the wrong time to take the test, or if you did not need a test.

Note: The time your sample is collected is the time stamp used by airlines (and all countries) to calculate the time of your test. Most countries require you to take the test 24, 48 or 72 hours before your flight (a few countries require this for the time of arrival, rather than time of departure). Please check with your airline, or the consulate of the country where you will be traveling, for the current time requirement of when you need to take the test.

Please note that we do not take responsibility if your flight is cancelled, and your Certificate falls outside the validity date (or time) due to a flight being delayed, rescheduled or cancelled, this is not our fault; just like a hotel, car rental company or restaurant will not take responsibility if you have to stay an additional day because your flight got rescheduled). For this reason we recommend that you book your test for a date and time that gives you some flexibility in case your flight is delayed or rescheduled.

Most international destinations require you to take the test less than 48 or 72 hours before your flight departure, but some destinations may require it less than 48 or 72 hours before arrival at your destination. Please check the requirements of the country you are visiting to determine when you should take your test (your airline or the embassy of the country you are visiting will provide you this information).

If the test is for travel, you must bring your passport with you to your appointment.

For Oropharyngeal tests:

For Nasopharyngeal tests:

An antigen test is a quick but inaccurate test that gives many false positive and negative results. This means that it can give a positive result when you are actually negative, or a negative result when you are actually positive. Many experts estimate that it is only about 50% accurate, and with the Omicron variant possibly even less than 30% accurate. This is why many international destinations do not accept this test. There is also a high risk that you will test positive upon arrival in your destination country if you have had a false-negative antigen test, which means you may have to be quarantined in your destination country.

RT-PCR tests are the gold standard in testing. They are more accurate than standard PCR tests and tests that are generally categorized as NAAT or molecular tests. An RT-PCR test is a PCR, NAAT, moecular and swab test (so a RT-PCR test will fulfill any of these requirements) but a PCR, NAAT, molecular or swab test is not necessarily a RT-PCR test. You should thus specifically choose a RT-PCR test if this is required or if you are not sure what the requirement is, since a RT-PCR test fulfills all requrements and is accepted everywhere. PCR tests can also be performed on oral samples, while all antigen tests require a nasal and nasopharyngeal sample.

Vaccination has no effect on the Lilium RT-PCR tests.

You should book a nasopharyngeal RT-PCR test.

The nasopharyngeal RT-PCR test has the advantage that it can, in most cases, detect the virus that was present in the past week or more (it can detect viral remnants and, if still present, any remaining live virus). This is because SARS-CoV-2 RNA can be detected for a longer period of time in the nasal cavity (after the virus has already been neutralized) because viral remnants are not cleared from the nasal cavity as quickly as from the oral cavity (in the oral cavity, enzymes and high cellular turnover result in faster clearance of dead cells and viral remnants).

Technically an oropharyngeal test may be more accurate than a nasopharyngeal test as it often detects a positive result earlier and a negative result earlier, especially for the Omicron strain. This means that an oropharyngeal test may be used as an indirect estimate for viral contagiousness (however, please note it still takes a few days after being infected with SARS-CoV-2 before it can be detected by any test). For many individuals (especially fully vaccinated and younger individuals) it can often be surprising by how rapidly the virus can be neutralized by the immune system once symptoms start (even if symptoms continue several days afterwards once they have started); an oropharyngeal test has the ability to detect this and more accurately show a true negative. It can be equally surprising for individuals with poor immune responses to the virus to find out they are still positive on the oropharyngeal test more than 10 days later, meaning they are probably still contagious. It is not possible to estimate this real-time viral status with a nasopharyngeal test as it can with the oropharyngeal test. The nasopharyngeal test is better for determining if you were recently infected with SARS-CoV-2 (it just cannot be used as an indirect estimate for determining if the virus may still be replicating or not, like the oropharyngeal test can).

Please note that many antigen tests do not show a positive until after the immune system has begun to attack the virus. Most antigen tests detect the nucleoprotein of the virus. Nucleoproteins become more readily accessible to the antibodies in the antigen test after the virus has been torn apart by the immune system, increasing the surface area of detectable nucleoproteins. Since the immune response to the virus in vaccinated individuals can be rapid, in many cases the virus has been largely neutralized by the time the antigen test shows the first positive signal. This positive signal may continue for over a week in nasal samples after the virus has already been completely neutralized, since the dead viral fragments can remain in the nasal cavity for a long time before being completely eliminated. Please also note that some antigen tests cannot distinguish between SARS-CoV-2 and other coronaviruses like the common cold. Antigen tests have a low accuracy, resulting in both false positives and false negatives. This is why a positive antigen test should always be confirmed by a PCR test within 24 hours.

Please note that if you perform an antigen test at home, or another swab test, you may adversely affect the results of a nasopharyngeal PCR test. This is because the swab used to collect the sample will also collect the RNA needed for the PCR test, reducing the total available amount of RNA for the PCR test. Although a PCR test is much more sensitive than an antigen test, there is much less viral RNA remnants present at the end of an infection than the amount of viral protein residue.