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  • Title: Establishing reference intervals for soluble urokinase plasminogen activator receptor in Northern European adults.
    Author: Bruun SB, Madsen JB, Brasen CL.
    Journal: Pract Lab Med; 2024 Mar; 39():e00371. PubMed ID: 38404526.
    Abstract:
    OBJECTIVES: Soluble urokinase plasminogen activator receptor (suPAR) may have untapped potential in clinical diagnostics. Previous studies determined reference intervals using an enzyme-linked immunoassay, but there is a need for reference intervals using a faster assay if the analysis is to be used in emergency medicine. The current study aims to determine reference intervals for suPAR using a fully automated particle-enhanced turbidimetric immunoassay (PETIA) according to the Clinical and Laboratory Standards Institute guideline A28-A3c. DESIGN AND METHODS: Blood samples were prospectively collected from Danish blood donors. Plasma suPAR was analyzed on the cobas 8000 module c502 in an open channel using a PETIA. Sex-partitioned reference intervals were determined using a parametric quantile approach. RESULTS: The study included 241 participants-123 females and 118 males. The common reference interval for suPAR was 1.56-4.11 ng/mL (95% confidence intervals (CI) for the lower and upper limits were 1.56-1.63 and 3.81-4.47, respectively). The reference interval for females was 1.59-4.65 ng/mL (95% CIs 1.48-1.70 and 4.09-5.48, respectively) and for males, 1.56-3.59 ng/mL (95% CIs 1.47-1.65 and 3.31-3.93, respectively). CONCLUSIONS: Our results support using sex-partitioned reference intervals for suPAR and provide a basis for future studies using the PETIA method.
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