Effects of Hyperlipidaemia, Hyperbilirubinaemia, and Haemolysis on Olympus AU 5000 Tests
Author Information
Author(s): Robert W. Hardy, Eric D. Green, Frank J. Pikul, David P. Silva, John W. Koenig, Mitchell G. Scott
Primary Institution: Washington University School of Medicine
Hypothesis
What are the effects of hyperlipidaemia, hyperbilirubinaemia, and haemolysis on tests performed by the Olympus AU 5000 analyser?
Conclusion
The study found that higher concentrations of interfering substances led to greater interferences in test results, but these interferences could be eliminated by ultracentrifugation.
Supporting Evidence
- Higher concentrations of bilirubin caused negative interferences in serum creatinine tests.
- Ultracentrifugation eliminated lipaemic interference in all instances.
- Seven interferences detected were not mentioned in the manufacturer's literature.
Takeaway
This study looked at how certain blood conditions can mess up test results from a specific machine, but there's a way to fix it.
Methodology
The study systematically investigated the effects of added Intralipid, bilirubin, and haemolysate on a serum pool from 40 patients, with analyses performed in duplicate.
Potential Biases
Seven interferences detected were not described in the manufacturer's literature, indicating potential bias in the manufacturer's claims.
Limitations
The study may not fully reflect in vivo results due to the use of unconjugated bilirubin and the potential for missing effects of haemolysis at low concentrations.
Participant Demographics
Patients' serum samples were pooled from 40 individuals.
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