International Scale for BCR-ABL1 Measurement

**Semantic type:** Intellectual Product

**Definition:** A scale established in 2005 to standardize quantitative BCR-ABL1 measurements across tests and laboratories, so as to facilitate interlaboratory studies, patient portability, and a harmonized definition of treatment response.

**Synonyms:** - IS - International Scale - International Scale for Quantitative BCR-ABL1 Result Reporting