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Gabapentin Concentration in Serum or Plasma

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

This test measures the amount of gabapentin, a medication used to treat certain types of seizures or nerve pain, in your blood.

Quick summary

["Knowing your gabapentin levels helps doctors check if your dose is working properly."]

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

Key facts at a glance

LOINC
103830-6
Short code
Gabapentin Mec Ql
Synonyms
Gabapentin Mec Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 doctor may order this test if you’re taking gabapentin to manage seizures or nerve pain. It helps assess whether your medication is at an effective level in your bloodstream.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm or vein to draw blood. If you’re on blood thinners, let your doctor know before the test.

What the Results Mean

Results are compared to a general range for gabapentin in blood, but exact values can vary by lab. High levels may indicate too much medication, while low levels could mean it’s not working as intended.

Common Reasons for Monitoring

Doctors monitor gabapentin levels to adjust doses, especially if you’re taking other medications that might interact with it or if you have kidney problems, as gabapentin is processed by the kidneys.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Gabapentin Level

Frequently asked questions

How long does it take to get gabapentin test results?
Results are typically available within 1 to 3 business days, depending on your lab. Follow-up with your doctor if you have questions about your results.
Can I eat or drink before this test?
You can eat and drink normally unless instructed otherwise by your doctor. Blood tests don’t require fasting unless specified for other reasons.
What if my gabapentin level is too high or too low?
If your levels are outside the expected range, your doctor may adjust your dose or check for other health conditions affecting how your body processes gabapentin.
  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