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Total Haloperidol Concentration

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

This test measures the amount of the antipsychotic medication haloperidol in your blood. It helps monitor your dose and response to the medication.

Quick summary

["This test helps ensure your haloperidol levels are safe and effective for your treatment."]

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

Key facts at a glance

LOINC
39595-4
Short code
Halibut IgE/IgE total %
Synonyms
Halibut IgE/IgE total %
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 Is This Test Done?

Your healthcare provider may order this test if you’re taking haloperidol (a medication used to treat psychosis, agitation, or certain movement disorders). It helps check if your dose is appropriate and if the medication is working as intended. Blood samples are taken from a vein in your arm, usually during a regular clinic visit.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for a few hours before the test if instructed by your provider. Wear a loose shirt for easy access to your arm. The blood draw is quick and typically painless, though you might feel a slight pinch.

What Happens During the Test?

A healthcare professional will insert a small needle into your vein, collect a blood sample, and remove the needle. The sample is then sent to a lab for analysis. The test usually takes a few minutes, and you can resume normal activities afterward.

What Do Results Mean?

Results are compared to a reference range specific to haloperidol, which varies by lab and patient factors. High levels may indicate overdose or poor metabolism, while low levels could mean insufficient medication. Your provider will discuss results with you in the context of your treatment plan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total Haloperidol

Frequently asked questions

How often should I get this test?
Your provider will determine the timing based on your medication regimen, symptoms, and lab guidelines. Typically, it may be done during routine check-ups or if you experience unusual side effects.
What if my results are outside the normal range?
If your levels are too high or too low, your provider may adjust your dose or investigate other factors, such as drug interactions or liver function. They’ll work with you to find the right balance for your needs.
Can I eat or drink before this test?
Check with your provider first, as some tests require fasting. Generally, you may drink water unless instructed otherwise, but avoid food for a specified period before the draw.
  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