The market taxonomy by type differentiates kits on technological architecture, throughput capability, and analytical specificity. Colorimetric kits held a 55 % share in 2023; they require only a microplate reader, making them the default for academic laboratories with tight capital budgets. Fluorometric variants, ~25 %, sacrifice throughput for an order-of-magnitude higher sensitivity, hence they are favored when plasma volumes are limited, as in neonatal or murine studies. ELISA kits, ~18 %, offer the highest specificity and lowest matrix interference, but their multi-step workflow limits them to high-throughput clinical labs willing to pay a price premium; the remaining ~2 % comprises lateral-flow or electrochemical prototypes still in pilot phases. By mapping price per test against required sample throughput, suppliers can predict that colorimetric formats will keep share above 50 % even while ELISA records the highest compound annual growth rate, above 7 %, through 2028.