There are many reasons why a “No Result” may occur on Panorama. Overall, 4-5% of cases may require a redraw and 65% of those cases will obtain a result on second attempt. No results may be due to an amount of fetal DNA in the sample that is below our testing cut off of 2.8% or there may have been some difficulties obtaining sufficient DNA or sequencing the DNA while it is processed in the laboratory. In many cases, the issue is sample specific and resolves with redraw. If you do not obtain a result after two attempts, the test cost will be refunded and one of our genetic counsellors will discuss recommendations for alternative screening with your care provider.