The TMPRSS2 Breakapart Probe consists of three red probes (191kb, 152kb and 161kb), which are telomeric to the TMPRSS2 gene and begin centromeric to the D21S1863 marker. Four green probes (235kb, 149kb, 143kb and 91kb) are also included that are centromeric to the TMPRSS2 gene and begin centromeric to the D21S1906 marker.