Modified Procedure for Simple and Rapid Collection of Zebrafish Fluid Samples for Biochemical Analyses.

This study addresses the challenge of collecting blood samples from zebrafish for biochemical analysis. Traditional methods are cumbersome due to low blood flow and rapid coagulation. Based on a previously published technique, we simplified the process by applying an anticoagulant solution directly to the incision site. The modified protocol involves immersing the fish in an ice bath, making a cross-sectional incision, and immediately applying anticoagulant solution. Centrifugation of the specimens provides a streamlined and efficient approach to zebrafish fluid sample collection, compatible with classic biochemical marker analyses.