en Infectious diseases and public health Infectious diseases and public health Original article Original article <b><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">Introduction</span></span></span></b><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">: COVID-19 is caused by severe acute respiratory syndrome coronavirus 2 (SARS-Cov2). It is a potentially deadly disease with grave consequences for public and global health. This study compared laboratory indices in recovered and fatal COVID-19 cases. <b>Methods</b>: In this descriptive-analytical cross-sectional study, sampling was conducted using the total count method, and the data was collected from the Borujerd Health Network&#39;s Disease Management Center database. From February 20, 2020, to July 21, 2020, 380 patients with positive PCR tests were included. The extracted data was exported into Stata-14 software. To analyze descriptive objectives, mean, percentage, standard deviation, Chi-squared test, and t-test were used. <b>Results</b>: Out of 380 positive COVID-19 cases, 300 patients recovered, and 80 lost their life. More than half of the recovered and fatal cases were men (55.16%). The highest mortality rate belonged to 80 </span></span></span><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">&le; </span></span></span><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">years (27.5%). Among fatal cases, 38.75% had no underlying disease, and the most common underlying diseases were diabetes (27.5%), chronic hypertension (18.75%), and malignancy (7.5%). Comparison of laboratory indices revealed a significant difference in the mean LHD, Na, K, BUN, BS, PT, AST, ALT, ALP, and ALP Hb between recovered and fatal cases (<i>P</i> <0.05). <b>Conclusion</b>: This finding can help determine patients&#39; prognoses and adjust the treatment approach. Further studies on paraclinical characteristics will shed further light on the pathogenesis of COVID-19 and appropriate treatment measures.</span></span></span> Coronavirus disease 2019 (COVID-19), Mortality, Recovery, Paraclinical characteristics 80 86 http://jommid.pasteur.ac.ir/browse.php?a_code=A-10-360-2&slc_lang=en&sid=1 Elham Goodarzi elhamgoodarzi.1370@yahoo.com No Social Determinants of Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran Mohammad Kakavand MohammadKaka@yahoo.com 0000-0003-0748-8507 No Deputy of Health, Lorestan University of Medical Sciences, Khorramabad, Ira Kobra Rashidi Kobrarashid22@yahoo.com 0000-0002-2230-3577 No Nursing Faculty of Borujerd, Lorestan University of Medical Sciences, Khorramabad, Iran Shahram Mamdohi Shahrammm1390@yahoo.com 0000-0002-0739-8993 No Deputy of Health, Lorestan University of Medical Sciences, Khorramabad, Iran Victoria Momenabadi Victorimom@yahoo.com 0000-0002-9265-7100 No Department of Public Health, School of Health, Bam University of Medical Sciences, Bam, Iran Mojgan Navabi Mojgann@gmai.com No Deputy of Health, Lorestan University of Medical Sciences, Khorramabad, Iran Hamidreza Abolfathi Hamidrezaa1998@yahoo.com No Deputy of Health, Lorestan University of Medical Sciences, Khorramabad, Iran Zaher Khazaei zaherkhazaei@yahoo.com 0000-0001-8619-3664 Yes Nahavand School of Allied Medical Sciences, Hamadan University of Medical Sciences, Hamadan, Iran