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Ciprofloxacin in Serum/Plasma (Quantitative Concentration)

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

This test measures the amount of the antibiotic ciprofloxacin in your blood, helping your doctor check if your dose is working properly.

Quick summary

["Your doctor may use this test to adjust your antibiotic treatment based on your blood levels."]

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

Key facts at a glance

LOINC
73444-2
Short code
Ciprofloxacin ind plt IgM SerPl Ql FC
Synonyms
Ciprofloxacin ind plt IgM SerPl Ql FC
Category
hematology
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
CPT
82784
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 Is Done

Your healthcare provider may order this test if you’re taking ciprofloxacin to treat or prevent infections. It helps ensure the right amount of medication is in your blood to fight bacteria without causing unnecessary side effects.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm or vein to draw blood. If you’re on a long-term ciprofloxacin regimen, your provider may schedule this test periodically to monitor your levels.

What the Results Mean

Results are typically reported as a concentration value (e.g., micrograms per milliliter). Your doctor will compare these results to your treatment plan to determine if your dose needs adjustment.

Possible Side Effects or Considerations

While rare, high or low ciprofloxacin levels can affect how well the drug works. If you experience nausea, dizziness, or unusual fatigue, discuss these symptoms with your doctor.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is critical for managing ciprofloxacin therapy, especially in patients with kidney issues or those taking other medications that interact with antibiotics. It helps prevent resistance and ensures safe dosing.

Short name

Cipro Level

Frequently asked questions

How often should I get this test if I’m taking ciprofloxacin long-term?
Your doctor will decide based on your treatment plan, but frequent tests may be needed if you have kidney problems or take other medications that alter ciprofloxacin levels.
Can I eat or drink before this blood test?
Typically, you can eat and drink normally unless your doctor specifies otherwise. Some tests may require fasting, but this test does not.
What if my ciprofloxacin level is too high or too low?
If your levels are outside the target range, your doctor may adjust your dose, change the medication, or monitor you more closely to avoid side effects or ineffective treatment.
  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