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Revolutionize Mohs Surgery Tissue Processing with RTFaSt™
Fast. Precise. Game-Changing.

In Mohs micrographic surgery, time matters—and precision is everything. That's why we're proud to introduce RTFaSt™ (Rapid Tissue Fixation and Staining) — a patented breakthrough in tissue processing reagents that transforms how you process and analyze tissue.  Perfect for fresh or frozen tissue specimens.

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Figure 1. Frozen section HE stain, RTFaSt1 fixative. 60x objective.

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Figure 2. Frozen section HE stain, 95% alcohol fixative.60x objective. Note epidermal cell shrinkage.

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Figure 3. Rapid Stain reagent frozen section stain.

40x objective. Nuclei appear bluer while connective

tissue appears pinker.

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Figure 4. Standard frozen section HE stain.

40x objective.

Figure 5. IHC staining for MART 1 (red chromogen) with blue nuclear counterstain infrozen section. MART1 stain is specific for melanocytes located along the basementmembrane. Section fixed in RTFaSt1 for MART1 IHC staining. 60x objective.

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What is RTFaSt™?

RTFaSt™ is an innovative system of reagents specifically engineered to:

Accelerate tissue fixation and staining for frozen sections

Reduce processing times from 18.5 hours to just 22–33 minutes

Preserve diagnostic accuracy while dramatically improving lab efficiency

Whether you’re a surgeon, lab manager, or histotech, RTFaSt™ empowers your team to make faster, smarter decisions—without sacrificing quality.

Why It Matters in Mohs Surgery

In Mohs procedures, every layer counts. Traditional processing methods examine only portions of margins. But with frozen sectioning, you need rapid, full-margin evaluation to identify residual cancer cells while sparing healthy tissue.


RTFaSt™ supports this by:
•    Enhancing slide preparation speed and clarity
•    Supporting real-time, in-procedure analysis
•    Improving patient outcomes through precise tumor removal

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The RTFaSt™ Advantage

Speed That Saves Lives

Cut turnaround time by up to 98%—from nearly a full day to under half an hour.

Economic Impact

Boost revenue through higher throughput, reduced reagent costs, and minimized staff overtime.

Environmental Efficiency

Designed to be eco-conscious, reducing chemical waste and energy use.

Smarter Workflow

Free your team from bottlenecks and downtime. More cases. Less stress.

Join the Tissue Processing Revolution

The future of Mohs surgery tissue processing is here—and it’s faster, cleaner, and more efficient than ever.
Discover how RTFaSt™ can transform your lab.

For additional information

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© 2022 Medinvent, Pennsylvania, USA

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