Accriva Diagnostics, Inc. conducts evaluations of different blood analyzers. If you are currently taking Warfarin or Coumadin, you may qualify to participate in a study. Just 30 minutes of your time in a relaxed and friendly environment will be necessary to take the blood sample(s) from a vein in your arm. Each donor will be compensated $45 per visit. Please contact 858-263-2332 or email phlebotomy@accriva.com to see if you qualify.