| Component | Amount | Final Concentration |
| Crude DNA preparation (from step 31) | 5 μl | Unknown |
| 10× Expand Buffer with MgCl2 | 5 μl | 1× |
| 10 mM dNTPs | 4 μl | 0.8 Mm |
| Primer HIS3-2F (10 μM) | 1 μl | 0.2 μM |
| Primer HIS3-2R (10 μM) | 1 μl | 0.2 μM |
| Expand thermostable polymerase (3.5 U μl-1) | 0.375 μl | 0.02625 U μl-1 |
| Nuclease-free water | 33.625 μl | |
| Total | 50 μl | |