Stability of IMMULITE 2000 plasma NT-proBNP in tubes with separator gel stored at room temperature

Two-year stability of NT-proBNP in frozen samples using the Roche Elecsys system

“…The stability of the peptide is at least three days at room temperature and six days at 4°C when the sample is centrifuged at arrival in the laboratory. 1–4 As regards its stability in frozen samples, only few data have been reported in the literature. 5,6 Mueller et al demonstrated that NT-proBNP is stable for at least four months at −20°C; other authors have reported a very good stability of this peptide for at least one year at −80°C.…”

The Feasibility of Using Lithium-Heparin Plasma From a Gel Separator Tube as a Substitute for Serum in Clinical Biochemical Tests

“…The gel separator moved upwards into the serum and plasma interface during centrifugation, where it formed a stable barrier from liquid and cells to keep analytes stable. Lowbeer and colleagues 25 reported that NTproBNP in G was stable for 3 days at room temperature, which was better than in S and P.…”