What characteristics (4) does an expiated bloodstain pattern show? Naim 08:05 Bloodstain Pattern Analysis What characteristics (4) does an expiated bloodstain pattern show? 1. Varying levels of force. 2. Varying stain sizes. 3. Air bubbles present. 4. Diluted due to saliva. Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+