How do you solve the Requiem blood analyzer puzzles? Grace can pick up several blood specimens on her excursion through the Rhodes Hill care center. Through them, you can put all those crafting materials lying around to good use - you just need to deliver them to the blood analyzer in the Blood Labs or the Office and activate them first. To solve the blood analyzer puzzle in Resident Evil Requiem, you must activate the correct nodes on a chemical compound within a minimum number of steps. Blood specimens unlock some of the best crafting items in the horror game, provided you can analyze them correctly. We've included where to find each blood specimen, the correct steps for the blood analyzer, and the crafting recipes you unlock for solving it.