Table 1.

Parameters for Assessing Quality of 500K Data Generated from wgaDNA

			QC parameter
			MCR		MDR
Sample	Storage time	Date of collection	NspI	StyI	NspI	StyI
109022 serum	Recent	11/02/2006	73.6	71.9	92.3	91.3
109023 serum	Recent	04/17/2007	76.8	79.2	94.6	96.0
109025 serum	Recent	04/17/2007	72.0	75.2	91.2	92.7
0270 plasma	∼3 years	01/12/2004	90.2	82.5	98.4	95.3
0271 plasma	∼3 years	01/12/2004	93.1	92.5	98.8	98.2
0905 serum	∼10 years	02/08/1997	63.5	68.6	88.5	93.0
8773 serum	∼10 years	03/05/1997	79.3	81.7	96.5	97.4
0625 serum	∼20 years	09/17/1988	85.9	92.6	96.7	98.8
0531 plasma	∼20 years–TR	04/04/1987	19.9	38.1	31.4	49.2
1166 plasma	∼20 years–TR	04/01/1987	53.2	58.7	66.5	70.6
109023 serum	Recent–5X	04/17/2007	34.6	38.1	44.6	49.2
109025 serum	Recent–5X	04/17/2007	57.3	58.7	74.2	70.6

From the dynamic mapping algorithm report in GTYPE 4.0. ∼20 years—TR, archived samples that were thawed and refrozen for other purposes at least once over time; recent–5X, samples experimentally thawed and refrozen five times to simulate heavy sample usage. NspI arrays contain 262,264 SNPs, StyI arrays contain 238,304 SNPs.