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Table 3 Results from diagnostic service.

From: Validation and implementation of array comparative genomic hybridisation as a first line test in place of postnatal karyotyping for genome imbalance

  All oligo arrays
(service)
Oligo arrays following normal karyotype Oligo arrays as first line test
Total patients 2414 1245 1169
Abnormal patients 585 (24%) 325 (26%) 260 (22%)
   - inherited 169 97 72
   - de novo 63 52 11
   - unknown inheritance 353 176 177