Last update 17.03.2021
If no time slot is available for the desired date or testing centre, you can consult the availability schedule and book an appointment with another testing centre.
The Luxembourg government invites residents as well as cross-border workers to participate in the voluntary and free of charge COVID-19 serological screening.
Unlike the PCR test, which is done by pharyngeal swabbing, a serological test is a test done by taking a blood sample. It is used to identify the presence or absence of anti-coronavirus antibodies in the blood. There is no need for fasting prior to the test.
The COVID-19 PCR test can determine whether or not a person is carrying the virus at time T, whereas the COVID-19 serological tests cannot tell whether or not a person is infected at time T. The serological test makes it possible to find out if a person has been in contact with the coronavirus in the past even without having had any symptoms.
At the present time, the state of scientific knowledge does not make it possible to determine how long the presence of antibodies protects against re-infection. A positive result of the serological test therefore does not guarantee lasting and systematic immunity.
Under no circumstances should a positive serological test lead a person to relax his or her efforts in social distancing and in the application of barrier gestures.
Even with a positive test, the person is still likely to be re-infected with COVID-19 and thus spread the virus.
The usefulness of the serological test lies in the fact that it is a complementary tool for epidemiological surveillance. This test makes it possible to develop a better understanding of the virus itself, its transmission dynamics and immune responses.
Participation in serological testing therefore helps professionals to better understand the evolution of the epidemic in the country.
Serological screening concerns any person who has a 13-digit Luxembourg identification number (matricule), be they:
Appointments can only be made if the invitation letter with the code has been received.
The serological test upon invitation of the Luxembourg government is free of charge.
Invitations to participate in the serological screening are mailed by post to residents and cross-border workers divided into representative groups.
Serological screening is on a voluntary basis.
Each invitation includes a unique code that can be used to make an appointment via MyGuichet.lu. This invitation code is valid for 4 weeks and is not renewable.
Invitations will also be sent by email.
In order to receive the invitation by email, applicants must confirm that they prefer to receive future invitations by email the next time they are booking an appointment via MyGuichet.lu.
Please note: it is currently not possible to register for the invitation by email if you have not received an invitation by post as the application needs to be made at the time of booking the appointment.
The applicant can make an appointment online using the form provided for this purpose on MyGuichet.lu. The procedure can be completed without using a LuxTrust authentication method.
Anyone who is unable to make an appointment online can contact the Health Helpline at (+352) 247-65533 from Monday to Sunday, from 8.00 to 19.00 . The Helpline staff will be able to help these people to make an appointment, provided they have received an invitation (with a code) to participate in the Large Scale Testing.
When making the appointment on MyGuichet.lu, the applicant must indicate the following:
Next, the applicant selects:
Please note: the appointment booking must be validated by clicking on "Send".
The applicant receives an appointment confirmation by email after transmitting the request. This document must be printed and presented at the appointment.
Persons who have already booked an appointment may cancel their appointment and book a new appointment.
To do so, they have to:
The result of a serological test does not require any particular medical or sanitary action.
The test results are sent to the person tested by post. Furthermore, as soon as the test result is available, the person tested:
After having entered the telephone number and date of birth, the person will be sent a security code. This code is required to get access to the test result.
The information note on data protection, which explains how personal data is processed in the context of the Large Scale Testing, can be consulted here in:
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