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You will find the answers to the most Frequently Asked Questions in our FAQ section. If you can't find the answer to your question, don't hesitate to contact us by calling 285 777-1.
Strict fasting, which means not eating or drinking anything other than water or black coffee (without milk or sugar) since the previous evening (allowing for 8 to 12 hours of digestion), is not obligatory for all analyses. However, it is necessary to have an empty stomach for the following analyses:
Cholesterol, LDL, HDL
Apolipoproteins A and Apolipoproteins B
Helikit (for Helicobacter pylori)*
*For this test, it is essential to come to the laboratory without having consumed liquids or solids, nor having smoked, in the previous 12 hours.
You must have the prescription given to you by your doctor with you, and your CNS card, if you have one.
For certain analyses, other documents are also necessary:
Genetic analyses: certificate of consultation and consent.
HT21 trisomy in pregnant women: consent form completed by the doctor and the patient, as well as the latest echography (ultrasound) report.
A prescription for analyses is valid for reimbursement by the CNS for 2 months, unless a date not exceeding 6 months has been specified by the prescribing physician.
Renewable prescriptions are valid for 6 months from the date of prescription.
Results of analyses are released the same day, except for certain specific analyses which may take longer, for example, tests for allergies, urine cultures, autoimmune tests and others.
Most analyses can be carried out without an appointment. Waiting times vary according to your time of arrival and the number of people waiting before you.
For spermology and HT21 analyses, please contact us on 285 777-1 before attending.
The fastest way to check your results is via our website or our app. You can also ask for a hard copy of your report at one of our centres upon presentation of your identity card.
It is best to keep it in a refrigerator
The patch must be placed on the inside of the non-dominant arm (the left arm if you are right-handed). The ideal position is in the hollow of the elbow. For the anaesthetic action to be optimal, put it in place about two hours before the blood sample is taken. If you have the opportunity to go into the centre, the nurse can have a look and tell you precisely where to place it.
Here are a few tips:
Avoid strenuous physical activities for 24 hours before the sample is taken.
If you are asked to observe a fasting period, do not eat after 8 p.m. and do not drink alcoholic beverages, sodas or fruit juices. You can drink water. On the morning of the sample, do not have any breakfast. You may have water or black coffee without sugar or milk.
Sit and relax during the 10–15 minutes before the sample is taken.
When the sample is being taken, remember to tell the staff about any medications you are taking so that the results of your analyses are not distorted.
By following these guidelines, your examination will take place in the best possible conditions.
This varies according to the number of people waiting at the sampling centre. People who have arrived before you will be seen first.
You can have a non-prescription analysis carried out, although you should be aware that the tests will be entirely at your own cost. You will still need to provide us with the name of your treating physician so that we can give him or her a copy of your results.
Cross-border workers are entitled to the same healthcare benefits in Luxembourg as Luxembourg residents.
You can have your samples and analyses carried out in our centres. The CNS will reimburse you if you are registered (with the exception of "non-nomenclature" analyses that are not reimbursed).
Your doctor will receive your results in real time on our IT tools, which are available to clinicians for the consultation of results. There is no difference between a doctor practising in Luxembourg and one in a bordering country.
You should not stop your treatment unless your biologist or doctor specifically requests it.
This test involves four steps:
1. The first blood test is taken on an empty stomach.
This is intended to measure your blood sugar while fasting. To avoid the consequences of feeling faint or ill while travelling to the lab, we advise that a relative or friend accompany you to drive you there and take you home.
2. Ingestion of a sweetened drink
3. Blood sample at H+1 (one hour after drinking the drink)
4. Blood test at H+2:
Two hours after drinking the drink, a third and final blood test will be performed.
If you have made an appointment online, the time will have been communicated to you.
All our services strictly respect medical ethics and professional secrecy. Your results are yours alone, and your employer will never receive any information about your state of health.
You do not need to be accompanied to have your blood test done. To make sure your analysis can be carried out, you must remember to bring your prescription and your social security card. Whether or not you have a prescription, you should always tell us the name of your doctor.
You can ask to remain anonymous when your sample is taken. Whether you have a prescription or not, you will need to tell us the name of your doctor.
For reasons of confidentiality we cannot fax your results to your workplace. On the other hand, you will have direct and secure access to your results from your computer, tablet or smartphone via our myLAB app.