Targeted Therapy Starts with the Right Organism: Causative Organism Identification Support at Massey Drugs

Bacteria

June 2025

When treating infectious conditions—especially in ophthalmology, ENT, or wound care—empiric therapy can only go so far. Knowing the exact causative organism allows for more targeted treatment and reduces the risk of resistance, toxicity, or treatment failure.

That’s where we come in.

We Support Causative Organism Identification 

At Massey Drugs, we accept and review culture and sensitivity (C&S) data and lab reports sent by providers to guide formulation decisions. Our pharmacists use this information to recommend appropriate compounded therapies—including targeted antibiotics or antifungals—matched to the organism’s susceptibility profile.

We routinely assist with:

  • Bacterial and fungal keratitis
  • Recalcitrant sinus infections
  • Post-surgical wound infections
  • Chronic otitis externa
  • Topical antibiotic resistance concerns

“When providers share lab results with us, it opens the door to highly specific, patient-tailored therapy. We’re able to recommend formulations that are clinically appropriate based on real data—not guesswork.”

Why It Matters

  • More precise treatment.
  • Fewer systemic side effects when the medication is tailored and localized.
  • Minimized resistance by avoiding broad-spectrum or unnecessary agents and by providing higher drug concentration at the site of action.

What We Need From You

  • A copy of the culture & sensitivity results, lab report, or identified organism.
  • The site of infection and any patient-specific considerations (allergies, tolerability issues, etc.)
  • Your preferred route of administration, or we can recommend one based on the site and organism.


We handle the rest—formulation selection, compounding, and timely shipping.

Let’s Get Started

To request support for organism-specific compounding, call us at 833.540.3500 or log in to our Practitioner Portal to download and submit a Patient Assessment Request.