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Clindamycin Concentration (Serum/Plasma)

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

This test measures the amount of the antibiotic clindamycin in your blood, helping doctors check if it’s working properly and whether you need adjustments to your dose.

Quick summary

["Clindamycin levels help ensure your antibiotic treatment is effective and safe."]

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

Key facts at a glance

LOINC
73436-8
Short code
Clindamycin ind plt IgM SerPl Ql FC
Synonyms
Clindamycin 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 doctor may order this test if you’re taking clindamycin to treat infections like bacterial skin infections, pneumonia, or other serious illnesses. It helps monitor how your body is responding to the medication and prevents side effects like diarrhea or resistance to the drug.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into a vein (usually in your arm) to draw blood. If you’re on a blood thinner, let your doctor know before the test.

What the Results Mean

Results are compared to a general reference range for clindamycin in blood, but your doctor will interpret them based on your specific treatment plan and medical history.

Possible Side Effects or Risks

While rare, blood tests can cause mild bruising or discomfort at the injection site. If you experience unusual symptoms like allergic reactions or severe pain, contact your doctor immediately.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clindamycin levels are critical for managing infections caused by clindamycin-resistant bacteria. High or low levels can indicate ineffective treatment or toxicity, requiring adjustments to your medication.

Short name

Clindamycin Level

Frequently asked questions

What causes clindamycin levels to be checked?
Doctors check clindamycin levels to ensure the antibiotic is working as intended, to avoid resistance, and to prevent side effects like diarrhea or kidney issues. It’s often done during or after treatment.
How soon will I get my results?
Results are typically available within 1 to 3 business days, depending on your lab. Your doctor will discuss them with you during your follow-up visit.
Can I eat or drink before this test?
You can eat and drink normally before this test, as it doesn’t require fasting. However, always follow your doctor’s instructions for any specific preparations.
  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