Cefuroxime Concentration in Serum/Plasma

Why This Test Is Done

Doctors order cefuroxime blood tests to verify that the medication is reaching the right levels in your bloodstream. This helps ensure the antibiotic is effective against infections like bacterial pneumonia, urinary tract infections, or skin infections. It may also be used to check for side effects or adjust the dose if needed.

What to Expect Before the Test

You may receive this test after starting cefuroxime therapy, typically 1–2 hours after a dose if taken orally, or shortly after an injection. No special preparation is needed, but let your healthcare provider know if you’re taking other medications or have allergies.

What the Results Mean

Results are usually reported in micrograms per milliliter (mcg/mL) or milligrams per liter (mg/L). While specific ranges vary by lab and clinical context, low levels may indicate insufficient antibiotic action, while very high levels could signal toxicity or improper dosing.

Common Reasons for Testing

This test is most commonly performed in patients receiving cefuroxime for infections, particularly those with known drug resistance or those requiring dose adjustments. It may also be used in monitoring patients with kidney issues, as cefuroxime is partly excreted through urine.