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Table 3 Microarray Coverage of UHRR, UMRR and URRR.

From: Universal Reference RNA as a standard for microarray experiments

Array platform Array used for analysis Spots number Spots with intensity value above zero % Spots with intensity value above 1x background % Spots with intensity value above 2x background %
UHRR      
NCI, NIH 3 7,600 99.9 99 97
NCI, NIH 6 10,000 99.9 98 82
Agilent 4 12,000 99.9 92 68
Stanford University 6 41,000 99.9 86 63
Stanford University 11 43,000 99.9 85 60
UMRR      
NCI, NIH 3 8,700 99.9 97 93
University of North Carolina 4 7,500 99.9 97 85
Agilent 4 8,500 98 87 70
URRR      
NCI, NIH 2 6.500 98 81 62
Agilent 8 14,500 99.7 86 72