Trend analysis of lab tests requisitions of COVID-19 prognostic biomarkers at a clinical chemistry reference laboratory-an observational study.

Ann Med Surg (Lond) · 2020 · PMC7645276 · PMID 33173580

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a positive trendno p-value reported

This study depicts that PCT demonstrated a positive trend right from March 2020 compared to the other three biomarkers, which were initially lower compared to 2019 in March and April.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.