Antibody Response to Azithromycin (Serum/Plasma) – Immunoassay
This test measures the presence of antibodies your body produces in response to azithromycin, a common antibiotic. It helps assess whether your immune system has recognized and reacted to the medication.
["This test helps track immune response to azithromycin, useful in monitoring treatment effectiveness or allergic reactions."]
Key facts at a glance
- LOINC
- 73510-0
- Short code
- Azithromycin ind plt IgM SerPl Ql FC
- Synonyms
- Azithromycin ind plt IgM SerPl Ql FC
- Category
- hematology
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- flow-cytometry
- CPT
- 82784
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if you’ve been prescribed azithromycin and want to check if your immune system is responding to the medication. It can also be used in research or clinical studies to study drug interactions or immune responses.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample (serum or plasma) during a routine lab visit. If you’re taking azithromycin, inform your provider, as it may affect results.
What the Test Results Mean
Positive results indicate your immune system detected azithromycin, while negative results suggest no detectable antibody response. Results are qualitative (yes/no) and not used for direct diagnosis alone.
Possible Risks or Side Effects
There are no major risks from this blood test. Rarely, mild discomfort or bruising at the needle site may occur.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Role in Diagnosis and Monitoring
Short name
Azithromycin Antibody Screening
Frequently asked questions
This test is primarily used in research or specialized studies to evaluate immune responses to antibiotics. It may help assess drug tolerance, allergic reactions, or immune system interactions with medications.
This test is not routinely used in standard clinical practice for diagnosing or managing azithromycin use. It is more relevant in research settings or specific clinical investigations.
Results may take several days to weeks to develop, depending on the immune response. Your provider will guide timing based on study protocols or clinical needs.
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