en Infectious Diseases Infectious Diseases مقاله مروری Review Article Background: Coronavirus disease 2019 (abbreviated as COVID-19) is a mysterious respiratory syndrome symptomatically spanning from healthy carriers to patients with life-threatening complications, in some cases, leading to a mournful death. For the time being, the contributory role of hematologists is much more recognized in the management of COVID-19, since the emergence of coagulopathy has recently been the focus of many studies in SARS-CoV-2 infection.&nbsp;<br> Methods: To provide a well-conceptualized viewpoint demonstrating the prognostic value of coagulation-related laboratory tests, we planned to perform a meta-analysis of pertinent literature representing information on PT, aPTT, and D-dimer tests in patients with COVID-19.&nbsp;<br> Results: Albeit the estimated pooled means of PT and aPTT were higher in severe cases, their mean values were not significantly higher as compared with patients in a non-severe condition. On the other hand, the mean value of D-dimer in severe patients was significantly higher than non-severe cases (X2=6.34, P=0.01), highlighting that the elevation of this parameter may be associated with the progression of the disease toward an unfavorable clinical outcome.&nbsp;<br> Conclusion: Even though at the time of writing this article the lack of adequate and appropriate studies denotes a major limitation to the current study, planning for the future research to determine the prognostic value of laboratory tests reflecting SARS-CoV-2-induced coagulopathy, mainly D-dimer, will definitively cast a flash of light on the significance of therapeutic anticoagulation at least for those with no absolute contraindication.<span dir="RTL"></span> SARS-CoV-2, COVID-19, Prognosis, Coagulation, D-dimer, PT, PTT, Meta-analysis 47 53 http://ijbc.ir/browse.php?a_code=A-10-512-1&slc_lang=en&sid=1 Davood Bashash David_5980@yahoo.com 10031947532846005630 10031947532846005630 Yes Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran Hassan Abolghasemi h.abolghasemi.ha@gmail.com 10031947532846005631 10031947532846005631 No Pediatric Congenital Hematologic Disorders Research Center, Mofid Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Sina Salari s.salari@sbmu.ac.ir 10031947532846005632 10031947532846005632 No Department of Medical Oncology, Hematology and Bone Marrow Transplantation, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran Meysam Olfatifar ol.meysam92@gmail.com 10031947532846005633 10031947532846005633 No Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran Peyman Eshghi p_eshghi@sbmu.ac.ir 10031947532846005634 10031947532846005634 No Pediatric Congenital Hematologic Disorders Research Center, Mofid Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Mohammad Esmaeil Akbari me-akbari@sbmu.ac.ir 10031947532846005635 10031947532846005635 No Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran