Piperacillin Concentration in Serum or Plasma
This test measures the amount of piperacillin, a type of antibiotic, in your blood. It helps doctors monitor how much of the drug is in your system to ensure it’s working effectively and to avoid potential side effects.
["This test helps guide antibiotic dosing and safety."]
Key facts at a glance
- LOINC
- 73203-2
- Short code
- Piperacillin ind plt IgM SerPl Ql FC
- Synonyms
- Piperacillin 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
Doctors may order this test if you’re taking piperacillin as part of a treatment plan, especially for serious infections. It helps ensure the correct dose is maintained in your bloodstream to fight bacteria while minimizing risks like kidney damage or allergic reactions. This is often done during or shortly after starting treatment.
What to Expect Before the Test
You’ll typically have a small needle inserted into your arm or vein to draw blood. The process is quick and usually painless. If you’re on a continuous infusion of piperacillin, your blood may be drawn from a port or catheter already in place.
What the Test Results Mean
Results are used to check if your antibiotic levels are within the target range for your condition. If levels are too low, your infection may not be fully treated. If levels are too high, you could experience side effects. Your healthcare provider will discuss these results with you and adjust your treatment plan if needed.
Possible Side Effects or Risks
While rare, high levels of piperacillin can cause side effects like kidney problems, allergic reactions, or low blood cell counts. Your doctor will monitor you closely during treatment and adjust doses as necessary.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Monitoring piperacillin levels is critical for managing infections caused by bacteria that are resistant to other antibiotics. It ensures therapeutic effectiveness and reduces the risk of toxicity. Results help tailor treatment to your specific needs, balancing the need to kill bacteria with avoiding harm to your body.
Short name
Piperacillin Level
Frequently asked questions
What does a low piperacillin level mean?
Can I eat or drink before this test?
How long will it take to get my results?
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