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Tiagabine/Creatinine Ratio, Urine

Published: August 9, 2026Updated: August 16, 2026

Measures the amount of tiagabine relative to creatinine in urine. It can help assess medication exposure or recent use.

Quick summary

["This urine test can show whether tiagabine is present and may help evaluate medication adherence or exposure."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
87769-6
Short code
tiaGABine/Creat Ur Cfm
Synonyms
tiaGABine/Creat Ur Cfm
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

This test measures tiagabine, a medicine used to treat seizures, in urine. The result is compared with the amount of creatinine in the same sample and may be reported as a tiagabine-to-creatinine ratio.

Why might I need this test?

A clinician may order this test to check for recent tiagabine use, monitor medication exposure, or help assess adherence. It may also be used as part of a broader evaluation of a seizure condition.

How is the test performed?

A urine sample is collected and analyzed in the laboratory for tiagabine and creatinine. The laboratory then calculates the ratio of tiagabine to creatinine, which can help account for differences in urine concentration.

How do I prepare for the test?

Follow the testing instructions provided by your clinician, including when the urine should be collected. Do not stop or change your tiagabine dose unless your healthcare professional tells you to do so.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Tiagabine/Creatinine Ratio

Frequently asked questions

Does this test show how much tiagabine is in my blood?
No. This test measures tiagabine in urine, not blood. The urine result can reflect recent use, but it does not directly determine the current blood concentration.
Why is creatinine included in the result?
Creatinine is used to help adjust the urine result for how concentrated or dilute the sample is. This makes comparison between urine samples easier.
Can this test prove that I took my medication as prescribed?
Not by itself. The result can support an assessment of medication use, but timing of the dose and sample collection, metabolism, and other factors can also affect it.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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