Sample results
Blood type incompatibility is a mismatch between blood types that triggers immune reactions when different blood types are mixed. It is caused by antibodies in the plasma attacking foreign red blood cell antigens, such as A, B, or Rh antigens. The Antibody Screen, RBC with Reflex to Identification, Titer, and Antigen Typing is the most important test for detecting these dangerous antibodies before transfusions or during pregnancy.
Blood type incompatibility is caused by the presence of antibodies in your plasma that recognize and attack foreign red blood cell antigens. Your red blood cells carry specific surface proteins called antigens (A, B, AB, or O types, plus Rh factor), and your immune system naturally produces antibodies against antigens you don't have. When incompatible blood enters your body through transfusion, pregnancy, or organ transplant, these antibodies bind to the foreign red blood cells and destroy them, triggering potentially life-threatening immune reactions including hemolysis, kidney failure, and shock.
The Antibody Screen, RBC with Reflex to Identification, Titer, and Antigen Typing is the most important test for blood type incompatibility because it detects antibodies in your blood that could react against foreign red blood cell antigens. This comprehensive screening identifies potential incompatibilities before they cause harm, and if antibodies are detected, the test automatically reflexes to identify the specific antibody type, measure its concentration through titering, and determine corresponding antigens. This detailed information is essential for safe blood matching during transfusions, preventing hemolytic transfusion reactions, and monitoring antibody levels during pregnancy when maternal-fetal blood type differences exist.
You should get tested if you are scheduled for surgery where blood transfusion might be needed, if you are pregnant (especially if you have Rh-negative blood), if you have a history of previous transfusion reactions, if you are preparing for an organ transplant, or if you have received multiple blood transfusions in the past. Testing is also critical if you experienced jaundice, dark urine, or unexplained anemia after a previous transfusion, or if you are planning any medical procedure with potential significant blood loss.
What this means
Your antibody screen came back negative, meaning no unexpected antibodies were detected in your blood. This is the expected and healthy result, indicating that you have a lower risk of complications during pregnancy or blood transfusions.
Recommended actions
If pregnant, follow your healthcare provider's recommendations for repeat testing around 28 weeks
Keep a record of your blood type and antibody status for future medical procedures
If Rh-negative and pregnant, discuss Rh immunoglobulin (RhoGAM) with your doctor
Retest if you have another pregnancy or before any planned surgery requiring transfusions
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Sample results
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