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Serum Concentration of Clofazimine (Mass Concentration)

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

This test measures the amount of clofazimine, a medication used to treat certain skin infections and conditions like leprosy, in your blood.

Quick summary

["This helps monitor your drug levels to ensure proper dosing and avoid side effects."]

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

Key facts at a glance

LOINC
104691-1
Short code
Clofazimine + Amikacin Islt MIC
Synonyms
Clofazimine + Amikacin Islt MIC
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mic
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 Matters

Clofazimine is prescribed to manage conditions like leprosy or severe skin infections. Your doctor may order this test to check if your body is absorbing the medication correctly and to adjust your dose if needed.

What to Expect Before the Test

No special preparation is required. You’ll have a small needle inserted into your arm or vein to draw blood. It usually takes a few minutes, and you may feel a brief pinch.

What the Results Mean

Results show how much clofazimine is in your blood at the time of testing. While reference ranges vary by lab, your doctor will interpret the result in relation to your specific treatment plan and health.

Potential Side Effects & Considerations

High or low levels may indicate issues like poor absorption or excessive medication. Common side effects of clofazimine include skin discoloration, stomach upset, or fatigue. Always discuss any symptoms with your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Regular monitoring of clofazimine levels is critical for patients on long-term therapy. Optimal levels help prevent toxicity (e.g., skin staining, liver issues) while ensuring effective treatment. Your doctor may adjust dosing based on these results to balance safety and efficacy.

Short name

Clofazimine Level

Frequently asked questions

How often should I get this test?
Your doctor will determine the timing based on your treatment plan, typically every few weeks or months, depending on your condition and response to the medication.
What does a low or high clofazimine level mean?
A low level might suggest your body isn’t absorbing enough medication, while a high level could indicate overdose or kidney issues. Your doctor will review results with you and adjust your treatment if needed.
Can I drink alcohol before this test?
No, avoid alcohol before testing as it may affect blood composition and test accuracy. Follow your doctor’s specific instructions for fasting or dietary restrictions if applicable.
  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