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COVID-19 / SPECIALTY RESEARCH

BiomarkersIn perspective.

The key COVID-19 findings in biomarkers, distilled into a clear, readable brief. The evidence is here whenever you want to go deeper.

INSIDE THIS MONITOR
61cited sources
3available findings

Study findings updated

AI-assisted evidence summary. For general information. These findings are not individual medical advice or a clinician endorsement.

THE SHORT VERSION

What’s worth knowing.

The key findings, what they mean, and the context that matters.

THE HEADLINE TAKEAWAY

Elevated C-reactive protein was linked to severe COVID-19

A systematic review and meta-analysis of COVID-19 hospitalisations reported an association between elevated C-reactive protein and severe COVID-19.

The cutoff defining elevated C-reactive protein, measurement timeframe and named reference group are not available in this summary, so the reported magnitude is not displayed.

See the evidence

Higher risk of severe COVID-19 with elevated CRP

4.4x

Malik P, Patel U, Mehta D, et al. Biomarkers and outcomes of COVID-19 hospitalisations: systematic review and meta-analysis. BMJ Evidence-Based Medicine. 2021;26(3):107-108.

CRP Elevated

4.4x
OR 4.37 (95% CI: 3.37-5.67)

Malik P, Patel U, Mehta D, et al. Biomarkers and outcomes of COVID-19 hospitalisations: systematic review and meta-analysis. BMJ Evidence-Based Medicine. 2021;26(3):107-108.

02

Plasma cell-free mitochondrial DNA was associated with COVID-19 severity

A systematic review and meta-analysis reported associations between plasma cell-free mitochondrial DNA levels and COVID-19 severity, and between elevated levels and development of COVID-19.

The populations, compared groups, measurement scale and timeframe are not available in this summary. The numerical differences are not displayed, and test accuracy cannot be determined.

See the evidence

Association between cf-mtDNA levels and COVID-19 disease severity

MD 1.08; p=0.004
95% CI: 0.35-1.82

Souza, Felipe C DE et al.. Evaluating the Relationship Between Plasma Cell-Free Mitochondrial DNA (cf-mtDNA) Levels and COVID-19 Severity: A Systematic Review and Meta-Analysis.. Anais da Academia Brasileira de Ciencias. 2026.

Added

Association between elevated cf-mtDNA levels and the development of COVID-19

MD 0.70; p<0.001
95% CI: 0.39-1.01

Souza, Felipe C DE et al.. Evaluating the Relationship Between Plasma Cell-Free Mitochondrial DNA (cf-mtDNA) Levels and COVID-19 Severity: A Systematic Review and Meta-Analysis.. Anais da Academia Brasileira de Ciencias. 2026.

Added

Study-specific findings. Different populations, treatments and follow-up periods can produce different results.

THE RESEARCH, AS IT ARRIVES

Latest studies.

The newest findings added to this collection.
The learning from each, already distilled.

  1. STUDY 01Findings added
    TL;DR

    Cell-free mitochondrial DNA was linked to severity and development

    The systematic review and meta-analysis reported associations between plasma cell-free mitochondrial DNA levels and COVID-19 severity, and between elevated levels and development of COVID-19.

    The populations, compared groups, measurement scale and timeframe are not available in this summary. The numerical differences are not displayed, and test accuracy cannot be determined.

    Study details & original results

    Souza, Felipe C DE et al.. Evaluating the Relationship Between Plasma Cell-Free Mitochondrial DNA (cf-mtDNA) Levels and COVID-19 Severity: A Systematic Review and Meta-Analysis.. Anais da Academia Brasileira de Ciencias. 2026.

    Association between cf-mtDNA levels and COVID-19 disease severity

    MD 1.08; p=0.004
    95% CI: 0.35-1.82

    Association between elevated cf-mtDNA levels and the development of COVID-19

    MD 0.70; p<0.001
    95% CI: 0.39-1.01

    Citation in Biomarkers
1 of 1 study updates

Dates show when findings were added here, not when papers were published. Study populations and comparisons differ.

WHEN YOU WANT TO GO DEEPER
See all 3 findingsOriginal results, comparisons and study details.
2 of 2 source groupsFindings stay together with their study.
SOURCE 612 findings

Souza, Felipe C DE et al.. Evaluating the Relationship Between Plasma Cell-Free Mitochondrial DNA (cf-mtDNA) Levels and COVID-19 Severity: A Systematic Review and Meta-Analysis.. Anais da Academia Brasileira de Ciencias. 2026.

Association between elevated cf-mtDNA levels and the development of COVID-19

Added
MD 0.70; p<0.00195% CI: 0.39-1.01Source [61]

Association between cf-mtDNA levels and COVID-19 disease severity

Added
MD 1.08; p=0.00495% CI: 0.35-1.82Source [61]
SOURCE 011 finding

Malik P, Patel U, Mehta D, et al. Biomarkers and outcomes of COVID-19 hospitalisations: systematic review and meta-analysis. BMJ Evidence-Based Medicine. 2021;26(3):107-108.

CRP Elevated

4.4xOR 4.37 (95% CI: 3.37-5.67)Source [1]
Browse the 61 original sourcesThe complete bibliography behind this monitor.
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    Souza, Felipe C DE et al.. Evaluating the Relationship Between Plasma Cell-Free Mitochondrial DNA (cf-mtDNA) Levels and COVID-19 Severity: A Systematic Review and Meta-Analysis.. Anais da Academia Brasileira de Ciencias. 2026.

    Open original source in a new tab
ABOUT THIS MONITOR

Understanding includes the limits.

This is an AI-assisted evidence summary, not a clinician endorsement. Read each original paper for its complete methods, population and limitations. Different studies can ask different questions and report different kinds of results.

Dates marked “added” describe when a finding entered this monitor, not when the study was published or clinically reviewed. Personal health and treatment decisions belong in a conversation with a qualified clinician.

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