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Primidone and Creatinine, Urine — Confirmatory Test

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

This test measures primidone in urine and may include urine creatinine to help account for how concentrated or dilute the specimen is.

Quick summary

["The result can help assess primidone exposure and whether the urine sample is reliable for interpretation."]

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

Key facts at a glance

LOINC
87767-0
Short code
Primidone/Creat Ur Cfm
Synonyms
Primidone/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 the amount of primidone, an antiseizure medicine, in your urine. Urine creatinine may also be reported to help account for differences in urine concentration.

Why might I need this test?

A clinician may order this test to check medication exposure, investigate an inadequate response or possible adverse effects, or confirm that primidone is being taken as prescribed. The result is interpreted together with symptoms, dose, and other tests.

How is the test performed?

You provide a urine sample, which is analyzed in the laboratory for primidone. If confirmatory testing is requested, the laboratory may use a second analytical method to verify the result.

How do I prepare for the test?

Follow the collection instructions provided by the laboratory, including any specified collection period and container. Fasting is generally not required, but tell your clinician about all medicines and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine primidone

Frequently asked questions

Is this a blood test?
No. This test is performed on a urine sample. Blood and urine primidone measurements can provide different information and should not be treated as interchangeable.
Why is urine creatinine included?
Urine creatinine can help show how concentrated or dilute the urine is. This may help the clinician interpret the primidone result more accurately.
Does an abnormal result mean I am taking too much primidone?
Not necessarily. The result can be influenced by the prescribed dose, timing of urine collection, hydration, kidney function, and medication absorption, so your clinician should interpret it with your overall health and symptoms.
  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