Tazobactam in Serum or Plasma (Antibiotic Concentration)
This test measures the amount of the antibiotic tazobactam in your blood. It helps doctors check if your dose is working properly and if the drug is staying within safe levels.
["This test helps monitor antibiotic effectiveness and safety during treatment."]
Key facts at a glance
- LOINC
- 73126-5
- Short code
- Tazobactam ind plt IgM SerPl Ql FC
- Synonyms
- Tazobactam 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 Is This Test Done?
Your healthcare provider may order this test if you’re receiving intravenous tazobactam (often combined with piperacillin) to ensure the medication is reaching the right concentration in your blood. It’s particularly useful for patients with kidney issues or those needing long-term antibiotic therapy.
What to Expect Before the Test
No special preparation is needed. A healthcare professional will draw blood from a vein in your arm. The process usually takes a few minutes, and you may feel a slight pinch or discomfort.
What the Results Mean
Results help your doctor adjust your antibiotic dose if needed. Low levels may mean the drug isn’t working as intended, while very high levels could indicate potential side effects. Your doctor will interpret the results in the context of your medical condition and treatment plan.
Possible Side Effects or Risks
While rare, tazobactam itself is generally well-tolerated. Blood tests like this are safe but may cause mild bruising or soreness at the injection site. If you experience allergic reactions or unusual symptoms, contact your doctor immediately.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Tazobactam is a beta-lactamase inhibitor used to protect the beta-lactam antibiotic piperacillin from being broken down by bacteria. Monitoring its levels ensures therapeutic efficacy and minimizes risks of antibiotic resistance or toxicity, especially in critically ill patients or those with impaired kidney function.
Short name
Tazobactam Level
Frequently asked questions
When will I get my results?
What if my results are outside the expected range?
Can I eat or drink before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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