The blood of the horseshoe crab contains copper ions, and its blood is blue.

The main component of horseshoe crab plasma is hemocyanin, and each 1ml of hemocyanin contains the heavy metal organic copper (Cu2+) at 0.28~0.31mg (horseshoe crab out of the water for the length of time difference). According to each (male and female) horseshoe crab average body weight ratio calculation, adult horseshoe crab plasma and meat containing this copper from the quality (Cu2+) were 600~1300mg.

Role:

The horseshoe crab's blood extract - "horseshoe crab reagent ", can accurately and quickly detect whether the internal tissues of the human body are diseased due to bacterial infections; in the pharmaceutical and food industries, it can be used to monitor toxin contamination. Scientists also use horseshoe crab blood to study cancer. However, after blood is drawn from horseshoe crabs, they are released.

Horseshoe crab reagents can be widely used for the detection and quantification of endotoxins in injections, radiopharmaceuticals, vaccines and other biologics, all kinds of liquids, food and dairy products.