This fast, easy to use blood typing kit contains everything required to determine blood group and RH factor using a whole blood sample obtained from a finger prick without the need for separate reagents or laboratory training. The EldonCard is a patented test card device that comes specially treated and impregnated with dried antibody sera Anti-A, Anti-B and Anti-RH used universally for determining Blood type by the forward typing method. Creates a Permanent Blood Type Record Card for medical histories and emergencies. The EldonCard blood typing kit is also excellent for classroom instruction and other educational applications. There have been no recalls or quality failures logged for this product by the FDA or any other regulating authority since the inception of the product some 15 years ago. We are not responsible for procedure errors or failure to follow instructions etc. The instructions are very clear but a new consumer may fail to follow instructions exactly, be unfamiliar with routine testing procedures or be unfamiliar with reading test results. If an error is made in doing a test like pre-triggering an automatic lancet rendering it unusable, adding too much water to the reagents etc. by not following instructions, we are not responsible.****Getting and invalid result is because of an error in execution.  These are a one use kit and it may take several trys to become proficient at this test.  These Blood Typing kits have a 100 percent quality control rate and any errors according to the manufacturer are human error.  These are used by hospitals and doctors with no errors.****