PCR Test FAQ
Next, we'll resolve some of the doubts most patients who want to undergo the Covid-19 screening test will resolve, see the differences between pcr test, Serology and Antigen Test, how to interpret results, IgG and IgM meaning, result delivery times, and more.
What are the most widespread tests for Covid-19 detection?
Prueba Test PCR
The PCR test, "polymerase chain reaction," is molecular biology that is performed by nasal and pharyngeal isotopate, a biological sample of the patient's RNA is collected, passed to DNA, and amplified to detect the genome of SARS TM 2 coronavirus. These replicas of the virus in the nose and throat can take two to three days to be detectable from infection.
Result type: The result can only be positive or negative and in some cases indeterminate. The PCR test does not quantify the replicas of the virus.
ELISA Serological Antibody Test:
This test quantifies the level of IgM/IgG antibodies in the blood. These antibodies are our body's response to Covid 19 infection. It takes several days for the body to generate these antibodies, which is why it is a recommended test to check if we pass the disease or if we are in the process of a non-initial phase.
Result types: ElISA technique analysis allows us to quantify the level of antibodies and knowing their tendency to interpret when the contagion might be approximate, always accompanying it from the clinical picture of the moment. The result will indicate the values of the IgM and IgG antibodies
It is the test that offers us less accurate information, but with faster times. This test consists of a kit that carries a reagent that becomes positive or negative upon contact with a nasopharyngeal sample. The antigen test is 93.3% reliable and is only recommended when you cannot wait 24/30 hours for the PCR or Serology test.
Result types: The result can only be positive or negative and in some cases indeterminate. This test reacts chemically and can only detect the disease between the 1st and 5th days from infection or symptoms.
Interpretation of Serological Test Results
Meaning of IgG and IgM
What if my result is:
- Negative IgM + Negative IgG
Clinical significance: Its result is negative, has not had the disease and has not generated antibodies.
- Positive IgM + Negative IgG
Clinical significance: Its result is positive. Early state of infection.
- Positive IgM + Positive IgG
Clinical significance: Active phase of infection. Its result could mean that you are in the final stage of the infection.
- Negative IgM + Positive IgG
Clinical significance: Its result is negative, it could also mean that the infection is past and cured.
IgM: It's the first response antibody. This antibody tends to grow within a few days of infection and become negative a few days later, unlike IgG. In some cases it is observed that this value becomes positive longer than expected, having to resort to a PCR test to confirm the negativization of the contagion case.
IgG: This is the sero-reinforce antibody generated by the body. This value, assimilated in some cases to the effect of a vaccine, tends to be generated after IgM but remain positive for a much longer time, providing a relative state of immunity against contagion.
Is it necessary to have a prescription to take the PCR, Serology or Antigens test?
No, there is no need for a prescription to have the PCR test or the ELISA Antibody Serology test.
How long do the tests take?
The time to take the test is less than 5 min and the waiting time, less than 10 min (20 min or more weekends and holidays).
Do I need an appointment to take the test?
You do not need to make an appointment to have any of the tests to detect SARS-CoV-2 infection. You should only go at the established time that you are on this same website and we will attend you.
How soon do you deliver the results to me?
PCR and Serology results are delivered online within 12/24 hours of being analyzed. In the case of the antigen test, the result is communicated within 20 – 30 minutes.
Calculate the time to get the results of your PCR, Serology and Antigens test
Choose the type of test, day, turn and it will show you the approximate time you will receive your result.
Can I do the PCR test on children? Is it good for traveling?
If, both the PCR test, the Serology test, and the Antigen test can be done on children of all ages. For our experience only PCR and Serology tests are indicated if you are close to traveling, but you should consult with your company or airline for the proof you are required to do.
PCR tests that meet the standard for travelers
We comply with the protocol and speed that a traveler needs to complete their journey within the deadlines required by the airline and destination country (24, 36, 48 and 72h), for the COVID-19 PCR test. We give you the result in the English and Spanish language (a fundamental requirement if your destination is Germany, Italy or Austria), your report also indicates the time and day when the sample is analyzed and the time of completion. In addition, the laboratory is ISO certified.
Experience in patients traveling to: Germany, Italy, Austria, Uruguay and others.
Do you have any questions?
talk to us
626 31 02 42
626 31 02 42
Find us: Ca
lle José Rizal, 119 – Madri
dAvda. San Luis 164 – Madrid