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. 2023 Jan 27;415(7):1357–1369. doi: 10.1007/s00216-023-04527-8

Table 6.

Inter-day accuracy and precision (RSD%)

Concentration, pg/mL	Vitamin D metabolite	Inter-day
Concentration, pg/mL	Vitamin D metabolite	Accuracy, RSD%	Precision, RSD%
100	1,25(OH)₂D₃	−2.90	4.75
	1,25(OH)₂D₂	−3.59	3.45
	24,25(OH)₂D₃	6.10	6.09
	24,25(OH)₂D₂	−0.20	7.07
	25(OH)D₃	6.28	6.73
	25(OH)D₂	12.22	12.47
500	1,25(OH)₂D₃	−9.53	4.97
	1,25(OH)₂D₂	−4.56	3.98
	24,25(OH)₂D₃	−4.16	2.37
	24,25(OH)₂D₂	−8.85	2.22
	25(OH)D₃	1.34	5.10
	25(OH)D₂	2.60	4.47
1000	1,25(OH)₂D₃	4.88	9.58
	1,25(OH)₂D₂	−7.44	10.88
	24,25(OH)₂D₃	−5.10	10.54
	24,25(OH)₂D₂	−3.0	5.52
	25(OH)D₃	−0.25	9.12
	25(OH)D₂	4.47	11.60