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Pharmacokinetic profile of fluphenazine (serum/plasma concentration)

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

This test measures the amount of fluphenazine, a medication used to treat certain mental health conditions, in your blood. It helps doctors monitor drug levels to ensure proper dosing.

Quick summary

["This test helps ensure your fluphenazine dose is safe and effective."]

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

Key facts at a glance

LOINC
75766-6
Short code
fluPHENAZine Bld/Urn Ql Scn
Synonyms
fluPHENAZine Bld/Urn Ql Scn
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
screen
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

Why Is This Test Done?

Your healthcare provider may order this test if you’re taking fluphenazine long-term or if you have concerns about how well your body is processing the medication. It helps prevent toxic levels that could cause side effects.

What Does This Test Involve?

A blood sample is taken from a vein in your arm. The sample is sent to a lab where it’s analyzed to measure fluphenazine concentration using a sensitive immunoassay method.

What Do Results Mean?

Results are typically reported as a concentration value (e.g., nanograms per milliliter). While reference ranges vary by lab, abnormal levels may indicate either insufficient or excessive exposure to the medication.

What Are Possible Results?

Low levels might suggest poor absorption or metabolism, while very high levels could indicate overdose or incorrect dosing. Your provider will interpret results in the context of your treatment plan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Fluphenazine is a potent antipsychotic medication. Monitoring blood levels is critical to balance therapeutic effects with risks of side effects, such as sedation, movement disorders, or metabolic changes.

Short name

Fluphenazine Blood Level

Frequently asked questions

Why might my doctor request this test?
Your doctor may order this test if you’re on fluphenazine for more than a few weeks, if you’ve missed doses, or if you’re experiencing unusual symptoms like dizziness, confusion, or excessive sleepiness.
What should I expect during the blood draw?
You’ll likely sit comfortably while a healthcare provider inserts a small needle into your arm. The process takes about 5 minutes, and you may feel a brief pinch. A bandage will cover the site afterward.
Can I eat or drink before this test?
You can eat and drink normally unless instructed otherwise by your provider. Some medications or foods may affect lab results, so check with your doctor if you’re unsure.
  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