The aims is for detect the hormone profiles in crustacean's hemolymph. Therefore, before proceed with the GC-MS procedures, the hemolymph need to be dissolve with derivatives. Does anyone can help me to identify the suitable derivatives? Based on my experience with ELISA, methanol and ethyl ether can become the derivates. But I am not sure the suitable derivatives for detecting hormone profiles by using GC-MS procedures. Thank you.