{"id":"tobramycin-peak","name":"Tobramycin (Peak)","shortName":"Tobramycin peak","aliases":["Tobramycin Level, Peak","Tobramycin, Peak","Tobramycin Peak","Tobramycin Peak Level","Nebcin"],"abbreviations":[],"loinc":[{"code":"4057-6","primary":true},{"code":"22751-2","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"ug/mL","display":"µg/mL"},{"ucum":"mg/L","display":"mg/L"},{"ucum":"umol/L","display":"µmol/L"}],"referenceRanges":[{"population":"Adults","low":5,"high":10,"unit":"ug/mL","unitDisplay":"µg/mL","note":"Quest's published peak interval (printed as 5.0–10.0 mg/L, the same as µg/mL) for a sample drawn 30 minutes after the end of an IV infusion, or 60–90 minutes after an intramuscular dose, on conventional (several-times-a-day) dosing. It does not apply to once-daily (extended-interval) regimens, which aim for higher peaks by design. FDA labeling advises avoiding prolonged concentrations above 12 mcg/mL.","sources":[{"title":"Tobramycin, Peak (test code 8576)","url":"https://testdirectory.questdiagnostics.com/test/test-detail/8576/tobramycin-peak?cc=MASTER","publisher":"Quest Diagnostics"},{"title":"Tobramycin injection prescribing information","url":"https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=ac8134d9-a726-4508-b8b9-a536ef17243d","publisher":"DailyMed, National Library of Medicine"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"The highest tobramycin level in your blood after a dose, used to check this IV antibiotic is reaching an effective level.","url":"https://bloodtesttracker.com/markers/tobramycin-peak","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}