Urinary Tolterodine Concentration (24-Hour Collection)
This test measures the amount of tolterodine, a medication used to treat overactive bladder, in your urine over a 24-hour period. It helps doctors check if the drug is being absorbed and excreted as expected.
["Assesses how well your body processes tolterodine for bladder control treatment."]
Key facts at a glance
- LOINC
- 73113-3
- Short code
- Tolterodine ind plt IgM SerPl Ql FC
- Synonyms
- Tolterodine 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 Matters
Your doctor may order this test if they suspect you’re not responding well to tolterodine, or if you have concerns about side effects like dry mouth, dizziness, or constipation. It also helps monitor long-term drug levels to avoid unnecessary doses or toxicity.
What to Expect Before the Test
You’ll need to collect all urine for a full 24 hours—typically from midnight to midnight. Use clean containers and keep the sample refrigerated. Your doctor or lab technician will provide detailed instructions to ensure accuracy.
During the Test Process
No special preparation is needed beyond following the 24-hour urine collection guidelines. The lab analyzes the sample for tolterodine concentration using a sensitive detection method.
What the Results Mean
Results help determine if your dose is appropriate. Low levels might mean the drug isn’t working as intended, while very high levels could signal issues with metabolism or kidney function. Your doctor will interpret results in the context of your symptoms and medical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is primarily used to evaluate drug absorption, distribution, and excretion in patients taking tolterodine for bladder symptoms. Abnormal results may prompt adjustments to dosage, alternative medications, or further investigations into underlying conditions affecting drug metabolism.
Short name
24-Hour Tolterodine Urine Test
Frequently asked questions
Why did my doctor order this test?
What does a ‘normal’ result mean?
Can I drink alcohol before or during the urine collection?
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