Published December 9, 2025 | Version v1
Journal article Open

LABORATORY PREDICTORS OF SEVERE COVID-19: A SCIENTIFIC AND ANALYTICAL REVIEW OF RETROSPECTIVE STUDY DATA

  • 1. Tashkent State Medical University, Uzbekistan

Description

During the COVID-19 pandemic, laboratory biomarkers have become essential tools for evaluating disease severity, predicting complications, and determining the need for intensive therapy. This article presents a scientific and analytical synthesis of retrospective data from 350 hospitalized patients with PCR-confirmed SARS-CoV-2 infection.

Key laboratory indicators with high prognostic significance were identified: lymphopenia, neutrophil-to-lymphocyte ratio (N/L), C-reactive protein (CRP), lactate dehydrogenase (LDH), fibrinogen, D-dimer, and platelet parameters. The study established that combined immuno-inflammatory and coagulopathic abnormalities shape an integral pathogenetic profile of severe COVID-19. Particular attention is given to the U-shaped relationship between fibrinogen levels (<2.0 g/L or >9.0 g/L) and mortality risk, as well as the strong association of elevated D-dimer with thrombotic complications and multi-organ failure.

These findings underscore the necessity of continuous laboratory monitoring and highlight the importance of biomarker-based personalized patient management.

Files

Alimova Umidakhon Omonjon qizi, 315-318.pdf

Files (782.2 kB)

Name Size Download all
md5:1202a19d2c11f0f308d8bf593fabd370
782.2 kB Preview Download

Additional details

References

  • 1. Alimova, U. O. O. (2022). COVID-19 bilan kasallangan bemorlarda laborator ko'rsatkichlar dinamikasining retrospektiv tahlili [Master's thesis, Tashkent State Medical Academy].
  • 2. Chen, N., Zhou, M., Dong, X., Qu, J., Gong, F., Han, Y., … Zhang, L. (2020). Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: A descriptive study. The Lancet, 395(10223), 507–513. https://doi.org/10.1016/S0140-6736(20)30211-7
  • 3. Guan, W., Ni, Z., Hu, Y., Liang, W., Ou, C., He, J., … Zhong, N. (2020). Clinical characteristics of coronavirus disease 2019 in China. The New England Journal of Medicine, 382(18), 1708–1720. https://doi.org/10.1056/NEJMoa2002032
  • 4. Huang, C., Wang, Y., Li, X., Ren, L., Zhao, J., Hu, Y., … Cao, B. (2020). Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. The Lancet, 395(10223), 497–506. https://doi.org/10.1016/S0140-6736(20)30183-5
  • 5. Tang, N., Bai, H., Chen, X., Gong, J., Li, D., & Sun, Z. (2020). Abnormal coagulation parameters are associated with poor prognosis in patients with novel coronavirus pneumonia. Journal of Thrombosis and Haemostasis, 18(4), 844–847. https://doi.org/10.1111/jth.14768