The Tickborne BBB Direct Detect dPCR may be performed on a single blood sample or on a series of three blood samples drawn every other day within a 5- to 8-day period. The 3-Day Draw is similar to the 1-Day Draw, except for the number of samples and the days they are drawn (i.e., Day 1, Day 3, Day 5).

Note: A 3-Day Draw cannot be performed if all three samples are collected on the same day. Samples must be drawn on different days.

Bartonella species invade the endothelial cells lining the vascular system, cycling in and out of the blood over 5 to 8 days. They evade the immune response in the bloodstream by hiding in erythrocytes and other cell types. Research suggests that a serial testing approach, which we call a 3-Day—or Triple Draw—may increase the odds of a positive dPCR result.