Tempus HRD

**Semantic type:** Laboratory Procedure

**Definition:** A test designed to identify homologous recombination deficiency (HRD) in a tumor sample by characterizing defects in homologous recombination repair (HRR) pathways. It is an add-on test for samples that are tested with Tempus xT or xR, so it can facilitate informed treatment decisions without requiring additional specimens.

**Synonyms:** - Tempus HRD test