NAACCR Item #3852: HER2 ISH Dual Probe Ratio
|Source of Standard
NAACCR XML: Tumor.her2IshDualProbeRatio
HER2 in situ hybridization (ISH) Dual Probe Ratio is the summary score for HER2 testing using a dual probe. The test will report results for both HER2 and CEP17, the latter used as a control. The HER2/CEP17 ratio is reported.
HER2 ISH Dual Probe Ratio is a Registry Data Collection Variable in AJCC. It is a new data item for cases diagnosed 1/1/2018+.
|Ratio of 0.0 to 99.9
|Less than 2.0
|Greater than or equal to 2.0
|Test ordered, results not in chart
|Not applicable: Information not collected for this case (If this item is required by your standard setter, use of code XX.8 will result in an edit error.)
|Not documented in medical record Results cannot be determined (indeterminate) Dual probe test not done; only single probe test performed HER2 ISH Dual Probe Ratio not assessed or unknown if assessed
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.