ERBB2/D17Z1 Copy Number Ratio Finding

**Semantic type:** Laboratory or Test Result

**Definition:** A genetic copy number finding indicating the ratio of the number of signals for a probe targeting the ERBB2 gene to the number of signals for a probe targeting chromosome 17 alpha satellite repeats (D17Z1).

**Synonyms:** - ERBB2/D17Z1 Copy Number Ratio - HER2/D17Z1 Copy Number Ratio - HER2:D17Z1 Copy Number Ratio - HER2:D17Z1 Ratio