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D-dimer assay interference detected by the discrepancy in D-dimer concentrations at different dilutions: a case
Marija Milić1,2, Dejana Brkić Barbarić3, Iva Lukić1,2
1Clinical Institute of Laboratory Diagnostics, University Hospital Centre Osijek, Osijek, Croatia.
Heterophilic antibodies can interfere with D-dimer testing, leading to inaccurate results. This case report details how SARS-CoV-2 infection may cause such interference, necessitating careful laboratory investigation and clinical-laboratory collaboration.
Area of Science:
- Clinical Chemistry
- Immunology
- Diagnostic Medicine
Background:
- D-dimer assays are crucial for diagnosing thrombotic events.
- Assay interference can lead to misdiagnosis and inappropriate patient management.
- Heterophilic antibodies are known causes of immunoassay interference.
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