Fast, simple method can detect key immunity biomarker in blood
Medical Xpress
February 16, 2026
Researchers at St. Petersburg University have developed an efficient way to detect a crucial immunity biomarker—neopterin—in the blood using nanotechnology and a laser. Neopterin is a nucleotide whose blood levels rise sharply in cases of viral infections, autoimmune or oncological diseases, implant rejection, and inflammatory processes.
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Originally published on Medical Xpress on 2/16/2026