Apakah ujian PCR untuk coronavirus?
A PCR test is short for polymerase chain reaction. This test is used to detect the coronavirus. The test detects the genetic material of the virus in a patient's blood. The test is ordered if doctors suspect a patient has the coronavirus.
To accurately diagnose the coronavirus, scientists at the National Institutes of Health use a specific set of diagnostics called the polymerase chain reaction (PCR). PCR is a technique that uses enzymes naturally present in the body to amplify a viral sample. This amplification process allows doctors to detect subtle changes between infected and uninfected people by examining how the virus-amplified DNA fragments respond to specific different reagents. "PCR amplifications used to diagnose human disease are unique because they use specific primers and end fragments and involve knowledge of the patient's internal anatomy," an NIH press release reads. These unique PCR diagnostics for coronavirus use a reagent called the polymerase chain reaction (PCR) to amplify DNA.
Apakah kelebihan PCR berbanding ujian lain?
PCR, short for "polymerase chain reaction," is a powerful technique used to amplify (or make more) DNA present in tiny samples. The PCR portion of modern diagnostic tests is a standard part of antifungal drug diagnosis. It is widely used in coronavirus diagnostic laboratories because PCR can amplify the genetic material (or genetic code) of a virus or bacteria.
Mengapa menggunakan PCR dan bukannya kaedah lain untuk mendiagnosis virus?
-Oleh kerana teknik pra-seperti Kromatografi Cecair (LC) dan Kromatografi Gas (GC) boleh mengekalkan banyak ciri sampel, termasuk perubahan dalam DNA yang boleh diekstrak. Ini mengekalkan data untuk kegunaan selanjutnya dalam penyelidikan atau penyelidikan perubatan.
- Satu lagi perbezaan. LC dan GC adalah intensif buruh dan boleh mahal. PCR pula boleh dilakukan di ruang tamu atau kafeteria hospital. Selain itu, ia agak mudah untuk dikendalikan, yang menjadikannya pilihan terbaik untuk mengasingkan sampel positif untuk kajian lanjut dalam persekitaran klinikal.
- Satu jenis PCR yang mendapat perhatian ramai baru-baru ini ialah{1}}penguatan fasa terbalik (RPA). Ia adalah lanjutan LC yang membantu mempercepatkan kelajuan dan kecekapan mendiagnosis beberapa jangkitan bakteria dan virus.
