Colour me skeptical. That certainly doesn’t sound like a plausible number, and the article doesn’t cite any sources.

This article http://www.worldstopexports.com/top-blood-exporters-by-count... total US blood exports at $1.4 billion, a distant second to Ireland. That includes both human and animal blood, and I’m not sure what fractions human.

Soybean exports, on the other hand, are closer to $17 billion a year: https://www.ers.usda.gov/topics/international-markets-us-tra...

Total US exports are $2.5 trillion, so blood is about 0.06% of that.

Edit: found a couple of reputable sources that put blood plus blood plasma exports in the $20 billion range. Possible that the discrepancy comes from whether plasma is included.