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Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Indian+J+Med+Microbiol 2021 ; 39 (1): 133-135 Nephropedia Template TP
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Cycle threshold values versus reverse transcription-polymerase chain reaction positivity in COVID-19 de-isolation #MMPMID33610247
Kapoor M; Kalita D; Panda PK
Indian J Med Microbiol 2021[Jan]; 39 (1): 133-135 PMID33610247show ga
In the modern COVID-19 pandemic, reverse transcription-polymerase chain reaction (RT-PCR) positivity has a major role in the diagnosis of the disease. However, in deciding the patient's discharge or de-isolation, its role is still debatable. We are, hereby, describing three cases (an intern, a nursing officer and a caretaker of another patient) where only RT-PCR could not help much since it was persistently positive for >20 days of the illness course. Instead, the cycle threshold (Ct) values could have better correlated with the infectivity of COVID. We propose a rising trend (24 h apart) and absolute Ct value?>?25, instead of RT-PCR negativity (which was taken as Ct value?>?36 in our laboratory), to be used in deciding the infective potential of the patients, their discharge from the hospital and de-isolation of the patients. This will help in the timely discharge of patients from health-care institutions and home isolation, which, as a result, will lead to optimal utilisation of the limited hospital resources we have available in the line of the ongoing pandemic. Future studies are required to define the exact cut-off of Ct value for de-isolation purposes.