Blood Type Test Kit Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

EldonCard is the best-performing blood type test kit brand in July 2026, moving 9,800 units across 4 ASINs for 51.6% of Top 10 volume. iHealth follows with 6,000 units (31.6%), ahead of BinaxNOW on 1,000 units (5.3%).

With 6 brands splitting the Top 10 and 88.4% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $25.46 to $34.88, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B09RQ78RWC leads positive momentum with ▲ 100.0% MoM growth on 100 units, with B0F549SKXR close behind at ▲ 42.9% MoM on 1K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.