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Tazobactam (Antibiotic) in Serum/Plasma

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

This test measures the amount of the antibiotic tazobactam in your blood, which helps doctors monitor your response to treatment and adjust your medication as needed.

Quick summary

["Tazobactam levels help ensure you’re receiving the right dose of your antibiotic."]

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

Key facts at a glance

LOINC
73127-3
Short code
Tazobactam ind plt IgG SerPl Ql FC
Synonyms
Tazobactam ind plt IgG 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 taking tazobactam (often combined with another antibiotic like piperacillin) to check if your blood levels are within the recommended range. This helps prevent side effects or ineffective treatment.

What Does the Test Involve?

A blood sample is taken from a vein, usually in your arm. The sample is sent to a lab where it’s analyzed to measure tazobactam concentration.

What to Expect Before the Test

No special preparation is needed, but let your provider know if you’re pregnant, breastfeeding, or have allergies to antibiotics.

What Are Possible Results?

Results are interpreted by your healthcare provider based on your specific situation, such as your weight, kidney function, and how you’re responding to treatment. Low or high levels may require dose adjustments.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Tazobactam Levels Guide Treatment Safety and Effectiveness

Short name

Tazobactam Level

Frequently asked questions

What does a low tazobactam level mean?
A low level may indicate that your body is metabolizing the drug too quickly, potentially requiring a higher dose to maintain effectiveness. Your provider may adjust your medication or monitor closely.
Can tazobactam levels affect kidney function?
Yes, kidney function impacts how your body processes tazobactam. If your kidneys aren’t working well, your provider may reduce your dose to avoid buildup, which could cause side effects.
How often will I need this test?
Your provider will determine the frequency based on your treatment plan, but it may be done periodically (e.g., weekly or monthly) during active therapy.
  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