What are other names for this Coomb test?
- Anti-human globulin test, direct
- DAT – Direct antiglobulin test
- DCT – Direct Coombs test
- Direct antiglobulin test
What are related Coomb tests?
- Reticulocyte count
- Serum haptoglobin measurement
- Serum unconjugated bilirubin measurement
- Bilirubin, neonatal measurement
- Complete blood count
- Direct antiglobulin test, complement-specific reagent
- Direct antiglobulin test, IgG-specific reagent
- Lactate dehydrogenase measurement
Why do I need this Coomb test?
Laboratory tests may be done for many reasons. Tests are performed for routine health screenings or if a disease or toxicity is suspected. Lab tests may be used to determine if a medical condition is improving or worsening. Lab tests may also be used to measure the success or failure of a medication or treatment plan. Lab tests may be ordered for professional or legal reasons. You may need this test if you have:
- Autoimmune hemolytic anemia
- Cold autoimmune hemolytic anemia
- Hemolytic disease of fetus OR newborn due to ABO immunization
- HUS – Hemolytic uremic syndrome
- Paroxysmal cold hemoglobinuria
- Transfusion reaction due to blood group antibody-antigen mismatch
When and how often should I have this test?
When and how often laboratory tests are done may depend on many factors. The timing of laboratory tests may rely on the results or completion of other tests, procedures, or treatments. Lab tests may be performed immediately in an emergency, or tests may be delayed as a condition is treated or monitored. A test may be suggested or become necessary when certain signs or symptoms appear. Due to changes in the way your body naturally functions through the course of a day, lab tests may need to be performed at a certain time of day. If you have prepared for a test by changing your food or fluid intake, lab tests may be timed in accordance with those changes. Timing of tests may be based on increased and decreased levels of medications, drugs or other substances in the body. The age or gender of the person being tested may affect when and how often a lab test is required. Chronic or progressive conditions may need ongoing monitoring through the use of lab tests. Conditions that worsen and improve may also need frequent monitoring. Certain tests may be repeated to obtain a series of results, or tests may need to be repeated to confirm or disprove results. Timing and frequency of lab tests may vary if they are performed for professional or legal reasons.
How should I get ready for the test?
Before having blood collected, tell the person drawing your blood if you are allergic to latex. Tell the healthcare worker if you have a medical condition or are using a medication or supplement that causes excessive bleeding. Also tell the healthcare worker if you have felt nauseated, lightheaded, or have fainted while having blood drawn in the past.