Test for Covid-19 & Get your Health Certificate with a 10% off

Test for Covid-19 to get the health certificate in order to travel safe.

For flights & road trips to Greece

Prerequisite for a passenger to board a flight to Greece from Monday 9 of November 2020:

  • Must present a valid test for Covid-19 and a health certificate (last 72 hours) indicating that he or she is not a carrier of the virus (negative result).
  • Without the test for Covid-19 and this health certificate, travellers will not be able to board the flight.
  • There will be no vacancies on flights to, from and within Greece. The passenger capacity of all aircraft will be full in order to support airlines.
  • The results must be in English and bear the name and passport number of the traveler.


Viral RNA by RT-PCR detection test for Covid-19

Thus far, the most commonly used and reliable test for Covid-19 has been the RT-PCR  performed using nasopharyngeal swabs or other upper respiratory tract specimens, including throat swab or, more recently, saliva. A variety of RNA gene targets are used by different

manufacturers, with most tests targeting 1 or more of the envelope (env), nucleocapsid (N), spike (S), RNA-dependent RNA, polymerase (RdRp), and ORF1 genes. The sensitivities of the tests to individual genes are comparable according to comparison studies except the RdRpSARSr

primer probe, which has a slightly lower sensitivity likely due to a mismatch in the reverse primer.

In most individuals with symptomatic Covid-19 infection, viral RNA in the nasopharyngeal swab as measured by the cycle threshold (Ct) becomes detectable as early as day 1 of symptoms and peaks within the first week of symptom onset. The Ct is the number of replication cycles required

to produce a fluorescent signal, with lower Ct values representing higher viral RNA loads. A Ct value less than 40 is clinically reported as PCR positive. This positivity starts to decline by week 3 and subsequently becomes undetectable. However, the Ct values obtained in severely ill

hospitalised patients are lower than the Ct values of mild cases, and PCR positivity may persist beyond 3 weeks after illness onset when most mild cases will yield a negative result. However, a “positive” PCR test result reflects only the detection of viral RNA and does not necessarily

indicate presence of viable virus.


Test of Antibodies to Covid-19

Infection can also be detected indirectly by measuring the host immune response to SARSCoV-2 infection. Serological diagnosis is especially important for patients with mild to moderate illness who may present late, beyond the first 2 weeks of illness onset.

Serological diagnosis also is becoming an important tool to understand the spread of covid-19 in the community and to identify individuals who are immune and potentially  “protected” from becoming infected. The most sensitive and earliest serological test for Covid-19 is total antibodies,

levels of which begin  to increase from the second week of symptom onset.


If you live in London and want to test for Covid-19 and get a health certificate for your trip abroad, Medical Diagnosis provides  this test for Covid-19 and the health certificate with 10% off if you book your air-tickets, hotels and/or activities from TicketSeller.

All you need to do is to search and book your air-tickets and hotel bookings from us, then print the confirmation email we’ll send you, arrange a booking at Medical Diagnosis 72 hours prior to your departure (don’t worry, it’ll only take few minutes till you get your results), get the results on

the same day and enjoy your holidays virus free!!!

Medical Diagnosis information

Patient reception opening hours effective from 25/3/2020

Monday to Friday 9.00am to 2.00pm

Saturday and Sunday 9.00am to 12.00pm

Should you require urgent testing outside these hours please call 020 84519373 or 020 88300503 or 07842667241

Something to remember:

If you have (or have had) any symptoms of the flu in the last two weeks, please do NOT visit the laboratory.

Only two people allowed in at a time.

Take with you your passport and printed email confirmation for air-tickets and/or hotel bookings.

Do not use mobile phones.

No companion is allowed.

Wear a face mask and gloves before entering.

Keep a distance of 2 meters (6.5 feet) between you and others.