Abogroupbldfather
This test determines the ABO blood group of the father, which helps assess the risk of blood type incompatibility between mother and baby during pregnancy.
{"The test identifies which of the four ABO blood types (A, B, AB, or O) the father has","It helps predict potential blood type conflicts that could affect a pregnancy","The test uses a simple blood sample and results are typically available within a day","Results are important for prenatal care and planning if incompatibility risks exist"}
Key facts at a glance
- LOINC
- 52793-7
- Short code
- ABO
- Synonyms
- ABO Group Bld Father
- Category
- chemistry
- Sample
- serum
- Container
- Red top serum separator tube (SST) or gold top tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–120 years
- Method
- Hemagglutination assay (tube or gel column method) with anti-A, anti-B, and anti-D (Rh) reagents
- CPT
- 86900
- SNOMED
- 365785006
- Specimen volume
- 3-5 mL of venous blood
- Stability
- Serum stable at 2-8°C (refrigerated) for up to 7 days; frozen at -20°C or below for longer storage. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What is this test?
The Father's ABO Blood Type test determines which of the four ABO blood groups (A, B, AB, or O) the father carries. Your ABO blood type is determined by specific proteins (antigens) found on the surface of your red blood cells. This test is commonly performed during pregnancy or when planning a family to help healthcare providers assess potential blood type incompatibility between the father and the mother, and how it might affect the baby.
How is the test performed?
A healthcare professional will draw a small blood sample from a vein in your arm. The blood sample is then sent to a laboratory where it is mixed with special antibodies to determine how your red blood cells react. Based on these reactions, your ABO blood type is identified. The procedure is quick and generally causes minimal discomfort. You may experience slight bruising at the needle site, but this typically resolves quickly.
Why is this test important during pregnancy?
Knowing the father's blood type helps healthcare providers predict the baby's blood type and identify potential blood type incompatibility issues. The most common concern is Rh incompatibility (related to the Rh factor, not ABO), but ABO incompatibility can also occur. When a mother and her unborn baby have different ABO blood types, it can sometimes lead to complications. Understanding the father's blood type helps the medical team monitor and manage any potential risks throughout the pregnancy.
Reference range
Result reported as A, B, AB, or O with Rh status (positive or negative). Reference range: Any ABO blood group is considered normal; result is qualitative.N/A
No special preparation required. Fasting not necessary. Inform laboratory of recent blood transfusions within last 3 months as this may affect results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Does this test hurt?
Do I need to fast before this test?
How long does it take to get results?
What do the blood types mean?
Is this test the same as paternity testing?
Sources
- 1
- 2
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy