Αποτελέσματα Αναζήτησης
7 Φεβ 2024 · The number of reaction cycles it takes to reach that threshold is called the “cycle threshold” (Ct) value. The lower the Ct value (meaning, the fewer cycles needed to turn a test positive), the greater the amount of viral RNA present in the original sample.
21 Μαΐ 2020 · Currently, diagnosis, screening, and surveillance depend on a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reverse transcriptase–quantitative polymerase chain reaction (RT-qPCR) test, and results are generally reported to the ordering physician as positive or negative.
We assessed whether SARS-CoV-2 cycle threshold (Ct) value at diagnosis could predict novel CoronaVirus Disease 2019 (COVID-19) severity, clinical manifestations, and six-month sequelae. Hospitalized and outpatient cases were randomly sampled from the diagnoses of March 2020 and data collected at 6 months by interview and from the regional ...
17 Σεπ 2020 · When rRT-PCR is performed, a predetermined number of cycles (rounds) of amplification of target (e.g. SARS-CoV-2) nucleic acid occur. If target is present in the specimen then each round of amplification results in a doubling of the amount of target present.
Objective: To study the correlation between the cycle threshold (CT) of reverse transcription–polymerase chain reaction (RT–PCR) test in confirmed COVID-19 patients and the severity of disease. Background: RT–PCR test is a standard method for the ...
6 Ιουν 2022 · An asymptomatic infection acquired from the exposure 10 days prior could explain the results. Alternatively, an undisclosed infection 2 to 3 months prior could also explain the results.
Longitudinal assessment of RT‐PCR test results in individuals requiring 15–30 days to clear SARS‐CoV‐2 RNA showed a significant reduction of the viral load in samples with high or intermediate viral loads (Ct values ≤ 25 and between 26 and 30, respectively) but the follow‐up group with low viral RNA (Ct values ≥ 31) exhibited a stable viral load.
