Clínica Médica Indautxu en Bilbao cuida de ti

Covid-19 Analytical Test


Reduce waiting time

by appointment


(goes to the clinic)

Monday to Friday from 7.30 a.m. to 7.30 p.m.

Saturdays from 8:00 a.m. to 1:30 p.m.


Saturdays from 1.30pm to 6.30pm

Sundays and Holidays from 9.00 a.m. to 6.30 p.m.


PCR Analytical Test: € 100

Serological Analytical Test: € 30

Antigen Analytical Test: € 40

Saturday afternoons, Sundays and Holidays: extra cost + € 20

MAKE AN APPOINTMENT and get a 20% discount only for working days


PCR: in 5 hours

Urgent PCR: in 2 hours

Serological: between 3 and 4 hours

Antigens: in 40 minutes

Results are delivered in English


The Indautxu Clinic is preparing to begin, in a pioneering way, the study of the different strains of SARS-COV-2 among the patients who come to the clinic to undergo the different virus detection tests ( PCR Test ). That is, all that positive person, it can be determined if they carry the British (B.1.1.7), South African (B.1.351), Brazilian (P.1) variant or the initial strain from Wuhan (SARS-COV-2 original).

In this way, you will be able to know the incidence of the different strains among your patients, as well as relate them to different data that will be required from the patients after performing the SARS-CoV-2 detection test.

For the determination of the different strains, probes (DNA fragments) will be used, which bind to the S gene (responsible for the formation of the Spike protein) in a specific way. But each probe carries the specific mutations of each variant in order to carry out a perfect differentiation.

  • HV 69-70 for the British strain.
  • E484K for the South African strain.
  • N501Y for the Brazilian strain.
  • Gen S for the Original strain.

Get your COVID-19 Test

Once the Covid -19 vaccine has been received, it is important to make sure that our body has generated the antibodies to respond to the virus.

THE ANTI-S SEROLOGICAL TEST can quantitatively measure the

level of antibodies against SARS-CoV-2.


Indautxu Clinic is prepared for the analysis and detection of COVID 19.

The following tests are carried out for its detection:

PCR genetic testing for coronavirus detection

It is a molecular biology laboratory technique that allows us to detect a fragment of the genetic material of the DNA or RNA of a pathogen. Through a nasopharyngeal sample .

By means of this technique, a fragment of the genetic material (RNA nucleic acids) is amplified , which allows a detection of the presence of the virus .

It is a very sensitive and highly specific technique . The downside is that the viral letter is not always detected directly due to multiple factors. The serological test serology is necessary in many cases to help its detection.

Window period 1 or 2 days.


The LAMP (Loop ediated isothermal AMPlification) method is an isothermal nucleic acid amplification method, showing higher sensitivity and specificity due to an exponential amplification characteristic.

 This method allows the detection of DNA and RNA templates, exceeding the efficiency of the PCR technique that is used preferentially to test the case of Covid-19.


The test requires a blood sample by drop or venipuncture.

Window period 2 or 3 weeks.

It consists of detecting the virus through IgA, IgM and IgG antibodies.

  • IgA: first antibody to infection. Appears 4-5 days after the onset of infection
  • IgM: it is an immunoglobulin or antibody that is detected when the virus is active. They appear 6-7 days after the onset of infection and greater positivity is detected at 15 days.
  • IgG: It is an antibody that appears 15 days after infection. These antibodies stay in the body for long periods of time. Provides possible immunity against Covid-19.

Lateral Flow Antigen

By  in vitro immunochromatography .

Technique that allows diagnosing the presence of the virus in the respiratory tract through a nasopharyngeal test . It detects certain proteins present in the virus.

It is a very sensitive and high quality technique. Results in a few hours, the same day.

This test must be carried out within the first 5 days of infection. The sensitivity of 0-3 days of contagion is 100% and of 4-7 days it is 90%.

Window period the first 7 days.

What test should I take?

  • During the first 7 days after infection, the Antigen Test detects the virus.
  • During the entire period of infection, the PCR Test finds the virus in the body.
  • From the first 7 days the Serological Test detects the presence of antibodies in the blood. IgM antibody senses the presence of the immune response to the presence of the virus. IgG antibody detects if you have overcome the infection.


PCR test: in 5 hours.

Urgent PCR test: in 2 hours.

Serological test: between 3 and 4 hours.

Antigen test: in 40 minutes.

These results are under the data protection law, thus guaranteeing maximum confidentiality.

Hours of service to the patient and collection of reports and extractions:


Reduce waiting time


With and Without Appointment:

Weekdays from 8:00 a.m. to 7:30 p.m. Working Saturdays from 9:00 a.m. to 1:00 p.m.


With Appointment:

Saturdays from 1.30pm to 6.30pm

Sunday and Holidays from 9.00 a.m. to 6.30 p.m.

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