Related Experiment Video
Updated: Jun 10, 2026
Detection of Protein Ubiquitination
Published on: August 19, 2009
How paraproteins can affect laboratory assays: spurious results and biological effects
Richard I King1, Christopher M Florkowski
1Clinical Biochemistry Unit, Canterbury Health Laboratories, Christchurch, New Zealand. richard.king@cdhb.govt.nz
Abstract:
The presence of large amounts of monoclonal paraprotein in the serum can lead to a range of spurious laboratory results. These may result from analytical interference of the M-protein through chemical or immunological means, or from pre-analytical interference; the different modes of interference are explored in this review along with suggested methods of prevention or detection.
Insights
High levels of monoclonal paraprotein (M-protein) in serum can cause inaccurate laboratory test results. This review explores M-protein interference and detection methods.
Area of Science:
- Clinical Chemistry
- Immunology
- Laboratory Medicine
Background:
- Monoclonal paraproteins (M-proteins) are abnormal proteins produced by plasma cells.
- Elevated M-protein levels in serum can significantly impact laboratory diagnostic accuracy.
Purpose of the Study:
- To review the mechanisms of laboratory result interference caused by M-proteins.
- To discuss strategies for preventing and detecting M-protein interference.
Main Methods:
- Literature review of analytical and pre-analytical interference.
- Exploration of chemical and immunological interference pathways.
- Summary of detection and prevention techniques.
Main Results:
- M-protein interference can manifest as analytical or pre-analytical errors.
- Chemical and immunological interactions are key mechanisms of interference.
- Various methods exist for identifying and mitigating these spurious results.
Conclusions:
- Understanding M-protein interference is crucial for accurate laboratory diagnostics.
- Implementing specific detection and prevention strategies can improve patient care.
- Further research may refine interference management protocols.
