Ordering Recommendation

Monitor levels of antimicrobial drug, ceftazidime.

Mnemonic
ML CEFTAZ
Methodology

Bioassay

Performed

Sun-Sat

Reported

2-3 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Plain red.

Specimen Preparation

Aseptically remove 2 mL serum to a sterile tube (ARUP supply #43115) and freeze. Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Plasma.

Remarks

Required information includes: time and date of collection, time of last dose, and list of all antibiotics that the patient is receiving or has received in the past 48 hours.

Stability

Ambient: 2 hours; Refrigerated: 24 hours (local clients only); Frozen: 1 week

Reference Interval
Interpretive Data

Normal peak serum concentration for ceftazidime is 42 µg/mL with a 500 mg IV dose, 69 µg/mL with a 1 g IV dose or 159-186 µg/mL with a 2 g IV dose. Trough serum concentration is not well established.

For bioassay measurements, the presence of other antimicrobial agents may interfere with the assay. Other factors that may influence antimicrobial levels include inherent differences among patients and their underlying physical conditions as well as the dose and route of administration of the antimicrobial agent. 

Compliance Category

Standard

Note

Please include time of last dose, and list all antibiotics that the patient is receiving or has received in the past 48 hours. This information is essential for performing the test and subsequent physician interpretation of results. 

Hotline History
N/A
CPT Codes

80299

Components
Component Test Code* Component Chart Name LOINC
2004887 Antibiotic Level, Ceftazadime 3449-6
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Ceftazidime serum level
Antibiotic Level, Ceftazidime