The complete FAST FISH Prenatal screen (LPF 001) for the detection and quantification of chromosomes 13, 18, 21, X and Y is available in 5, 10, 30 and 50 test kits. Each kit contains two probe sets, details of which are listed below.
Probe set 1:
- X centromere Xp11.1-q11.1 (DXZ1) Green
- Y centromere Yp11.1-q11.1 (DYZ3) Orange
- 18 centromere 18p11.1-q11.1 (D18Z1) Blue



Probe set 2:
- 13 unique sequence (13q14.2) Green
- 21 unique sequence (21q22.13) Orange