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  • Title: Evaluation of BD Vacutainer® Barricor™ blood collection tubes for routine chemistry testing on a Roche Cobas® 8000 Platform.
    Author: Fournier JE, Northrup V, Clark C, Fraser J, Howlett M, Atkinson P, Shea JL.
    Journal: Clin Biochem; 2018 Aug; 58():94-99. PubMed ID: 29885310.
    Abstract:
    INTRODUCTION: Barricor™ Vacutainers® are a novel non-gel separator blood collection tube. These tubes enable faster pre-analytical processing which could reduce turnaround time and be beneficial in an acute care setting. We sought to evaluate the bias, stability, and integrity of plasma generated from these tubes compared to Plasma Separator Tubes™ (PST) for 50 routine chemistry analytes on a Roche Cobas® 8000 analyzer. METHODS: Paired samples were collected from 150 patients originating in the emergency department and outpatient collections at the Saint John Regional Hospital. Barricor™ vacutainers were centrifuged for 3 min at 4000g and PST™ vacutainers for 10 min at 1300 g within two hours of collection. Plasma samples (n = 126) were then analyzed for 50 chemistry analytes and bias determined between tubes. Ten-day stability of AST, glucose, potassium, phosphate, and LDH was also assessed in a subset of paired samples (n = 4). Lastly, the quality of plasma (n = 20) was assessed through measurement of cell counts on a DxH Hematology Analyzer. RESULTS: All 50 analytes demonstrated comparable results across a broad concentration range between Barricor™ and PST™ vacutainers (average percent bias -1.5% to 6.1%; Deming linear regression slopes 0.933-1.041; correlation coefficients ≥ 0.9144). AST, potassium, glucose and LDH were stable for 10 days in Barricor™ vacutainers (change from baseline < 10%) but <5 days in PST™ vacutainers while phosphate was stable for 4 days in Barricor™ vs 2 days in PST™ vacutainers. Platelet counts were statistically lower in Barricor™ compared to PST™ vacutainers. CONCLUSION: Our data suggest that Barricor™ vacutainers are an acceptable alternative to PST™ vacutainers while offering the added benefit of decreased pre-analytical processing time, increased stability of certain analytes, and possibly less cellular contamination.
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