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Thioridazine concentration in blood

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

This test measures the amount of thioridazine, a medication used to treat certain mental health conditions, in your blood. It helps monitor drug levels to ensure safety and effectiveness.

Quick summary

["This test checks if your dose of thioridazine is within safe and effective ranges."]

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

Key facts at a glance

LOINC
75770-8
Short code
Thioridazine Bld/Urn Ql Scn
Synonyms
Thioridazine 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 This Test Is Done

Your healthcare provider may order this test if you’re taking thioridazine (an antipsychotic medication) to check if your blood levels are appropriate. It helps prevent side effects like low blood pressure, tremors, or other complications.

What to Expect Before the Test

No special preparation is needed. You’ll likely have a simple blood draw from a vein in your arm. The process is quick and usually painless.

What the Results Mean

Results are used to adjust your medication dose if needed. Low levels may indicate the medication isn’t working well, while very high levels could signal overdose or improper metabolism.

Common Side Effects to Watch For

Thioridazine can cause side effects like dizziness, dry mouth, or weight changes. If you experience unusual symptoms (e.g., confusion, slow heartbeat), report them to your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Monitoring Thioridazine Levels

Short name

Thioridazine Blood Level

Frequently asked questions

How often do I need this test?
Your provider will determine frequency based on your medication dose, health status, and how your body processes the drug. Regular monitoring helps balance safety and effectiveness.
Can I drink alcohol before this test?
Avoid alcohol before testing, as it may affect blood levels and test accuracy. Always follow your provider’s specific instructions.
What if my results are outside the normal range?
If results are abnormal, your provider may adjust your dose, switch medications, or investigate other health factors. Never change your medication without consulting them first.
  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