Table 3. . Stability of vancomycin (n = 6) at room temperature and -78°C in human whole blood volumetric absorptive microsampling.

Concentration (μg/ml)	%Accuracy ± % CV
	12 days at RT	52 days at -78°C	160 days at -78°C
2.50	88.9 ± 3.36	95.3 ± 7.08	91.5 ± 6.74
80.0	89.1 ± 11.1	88.4 ± 6.18	106 ± 8.88