New Assay Measured Serum Hemoglobin More Accurately
Researchers developed a testing method that could help doctors more reliably monitor hemolysis during heart surgery.
Updated on Oct. 13, 2026 in Heart Disease
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Scientists have developed a new latex agglutination immunoturbidimetric assay to measure serum free hemoglobin levels in blood. This tool offers more accurate readings than existing point-of-care methods, potentially aiding the monitoring of patients undergoing cardiovascular surgery.
Why it matters
Severe hemolysis releases excess free hemoglobin, which can cause significant organ damage if left undetected. Improving the precision of hemoglobin measurements allows for better clinical management and reduces the risks associated with complications during surgery.
A study evaluated the new assay using 119 stored blood samples from 20 adult cardiovascular surgery patients. Results showed the novel assay lacks the fixed and proportional biases found in current point-of-care methods and aligns closely with high-performance liquid chromatography.
The details
The assay uses latex agglutination immunoturbidimetric technology to detect levels of free hemoglobin. Unlike standard point-of-care tests that may exhibit significant measurement errors, this approach demonstrated minimal random error during performance testing. The researchers assessed the method's reliability by comparing perioperative changes in free hemoglobin levels before and after Haptoglobin administration, using Bland-Altman analysis to confirm agreement with established reference standards.
Timeline
The study results were released on October 13, 2026.
Health Landscape
Monitoring hemolysis is a critical component of cardiovascular surgery care to prevent systemic organ damage. This development updates diagnostic standards by providing a more reliable tool than current conventional point-of-care tests.
If you are planning to undergo cardiovascular surgery, you may want to ask your surgeon about the methods used to monitor for hemolysis during your operation. This finding reinforces the importance of using high-precision testing to guide treatment decisions like Haptoglobin administration.
The takeaway
Reliable testing is essential for managing the risks of hemolysis during heart surgery. Patients should feel empowered to discuss how their surgical team screens for complications and which diagnostic methods are utilized to ensure blood health.
Further reading
For more information on the latest innovations in cardiac care, visit our Heart Disease section.
Source note: This article includes information reported by Nature.
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