Serum/plasma concentration of anthranilic acid metabolites (qualitative screening)
This test measures certain breakdown products of the amino acid tryptophan in your blood, which may help detect metabolic or liver conditions.
["This screening may identify abnormal tryptophan metabolism that could signal underlying health concerns."]
Key facts at a glance
- LOINC
- 73478-0
- Short code
- Casanthranol ind plt IgM SerPl Ql FC
- Synonyms
- Casanthranol 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 Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like fatigue, nausea, or unexplained skin changes, or if you have a known condition affecting metabolism or liver function. It could also be part of a broader evaluation for inherited disorders or metabolic syndrome.
What to Expect Before the Test
No special preparation is typically needed, but you may be asked to fast for 8–12 hours before the blood draw if instructed by your provider. Wear comfortable clothing and plan to rest afterward, as drawing blood can cause lightheadedness.
During the Test Process
A healthcare professional will insert a small needle into a vein in your arm to collect blood. You may feel a brief pinch, but the procedure usually takes only a few minutes. The blood sample will be sent to a lab for analysis.
What the Results Mean
Results are qualitative (yes/no) rather than quantitative, meaning they indicate whether abnormal levels were detected rather than a specific numeric value. Elevated or altered levels may warrant further testing or medical evaluation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal anthranilic acid metabolites can signal conditions like phenylketonuria (a genetic disorder), liver disease, or other metabolic disorders. Early detection may help manage symptoms or prevent complications, but results should always be interpreted by a healthcare provider in the context of your full medical history.
Short name
Anthranilic acid metabolites (serum/plasma)
Frequently asked questions
What causes abnormal anthranilic acid levels?
How soon will I get my results?
Can I fast before this test?
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