Express genes are available in the following DNA prep sizes: 50 ng - 2 μg, 2 μg - 10 μg, 10 μg - 100 μg and 100 μg - 1 mg. Turnaround time increases with prep size and is as follows: 4-7 business days for 50 ng - 2 μg and 2 μg - 10 μg, and 7-10 business days for 10 μg - 100 μg and 100 μg - 1 mg. The same shipment format options are available for Standard and Express genes.