Antigen Detection for Angiotensinogen (Serum or Plasma)
This test measures the presence of antibodies against angiotensinogen, a protein involved in blood pressure regulation. It may be used to assess immune responses or certain inflammatory conditions.
["This test helps evaluate potential immune reactions to angiotensinogen, which could be linked to blood pressure or inflammatory processes."]
Key facts at a glance
- LOINC
- 105688-6
- Short code
- ASPNGDNA
- Synonyms
- A niger DNA Spec Ql NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Sterile, DNA-free, leak-proof primary collection container; serum separator tube (SST) or plain red-top tube for serum
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 87798
- SNOMED
- 122450008
- Specimen volume
- 1-2 mL of serum
- Stability
- Refrigerated (2-8°C): up to 7 days; Frozen (-20°C or below): up to 30 days; Avoid repeated freeze-thaw cycles
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 24–72 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or conditions related to autoimmune responses, chronic inflammation, or suspected antibody-mediated disorders. It could also be part of a broader evaluation for conditions affecting blood vessels or kidney function.
What to Expect Before the Test
No special preparation is typically needed. You may fast for 8–12 hours before the blood draw if instructed, but this is not always required for antibody testing. Bring any medications or questions to your appointment.
What the Test Results Mean
Results are qualitative (positive or negative) and indicate whether antibodies to angiotensinogen are present. A positive result suggests an immune response, but further testing may be needed to determine its clinical significance.
Common Conditions Monitored
This test may be used in cases of suspected autoimmune diseases (e.g., lupus, vasculitis), chronic inflammatory conditions, or when evaluating immune-related complications in kidney or vascular disorders.
Reference range
Negative (Aspergillus niger DNA not detected)N/A
No special patient preparation required. Specimen should be collected prior to initiation of antifungal therapy when clinically feasible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Angiotensinogen Antibody Screening
Frequently asked questions
What does a positive result mean?
Can fasting affect this test?
How long will I need to wait for results?
Sources
- 1
- 2Lab Tests OnlineSource
- 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