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Moxifloxacin Concentration in Serum

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

This test measures the amount of the antibiotic moxifloxacin in your blood serum. It helps healthcare providers assess drug levels to ensure proper dosing and monitor for potential side effects.

Quick summary

["This test helps determine if your moxifloxacin levels are within safe and effective ranges."]

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

Key facts at a glance

LOINC
76043-9
Short code
Moxifloxacin Islt Slgr Mcbct AB 0.5
Synonyms
Moxifloxacin Islt Slgr Mcbct AB 0.5
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
method-for-slow-growing-mycobacteria-antibiotic-concentration-at-ug-ml
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 doctor may order this test if you’re taking moxifloxacin to treat or prevent bacterial infections. It helps ensure the antibiotic is working effectively and at the right concentration in your blood.

What Does the Test Involve?

A blood sample is drawn from a vein, usually in your arm. The sample is then sent to a lab for analysis to measure moxifloxacin levels.

What Do Results Mean?

Results show the concentration of moxifloxacin in your blood. High levels may indicate overdosage or poor absorption, while low levels could mean the drug isn’t working as intended. Your doctor will interpret these results in the context of your treatment plan.

What Are Possible Results?

There are no standard reference ranges provided for this test since moxifloxacin levels vary based on dosage, frequency, and individual metabolism. Your doctor will compare results to your specific treatment goals.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is critical for managing antibiotic therapy. Proper dosing prevents resistance, reduces side effects, and ensures the infection is effectively treated. Abnormal levels may require dose adjustments or further investigation.

Short name

Moxifloxacin Level

Frequently asked questions

Why might my doctor request this test before or during my treatment?
Your doctor may order this test to confirm the antibiotic is reaching the right levels in your blood, especially if you’re taking high doses or have conditions that affect drug metabolism.
What if my results are outside the expected range?
If results are unusually high or low, your doctor will review your treatment plan. This could involve adjusting your dose, changing medications, or investigating other health factors that might affect how your body processes the drug.
Can I eat or drink anything before this test?
You can typically eat and drink normally unless your doctor specifies otherwise. Blood tests like this are usually done on an empty stomach for accuracy, but always follow your healthcare provider’s instructions.
  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