Arch Therapeutics Obtains Additional Positive Results for AC5 Surgical Hemostatic Device(TM) in Preclinical Safety Study

WELLESLEY, MA--(Marketwired - Jan 13, 2015) - Arch Therapeutics, Inc. (OTCQB: ARTH) ("Arch" or the "Company"), developer of the AC5 Surgical Hemostatic Device™, obtained positive results when AC5™ was subjected to a standardized medical device test for irritation potential. The irritation test in animals is a major component of the International Organization for Standardization's (ISO) required panel of biocompatibility testing necessary for medical devices prior to use in humans. AC5 is a unique development-stage hemostasis product being evaluated to control bleeding and fluid loss in order to provide faster and safer surgical and interventional care.

In this standard three-day in vivo rabbit model study, AC5 tested in relevant amounts was well tolerated, gave a zero (0) irritation score and was classified as a negligible irritant using a standardized scoring system. A device in this study can be classified and scored as negligible (0.0-0.4), slight (0.5-1.9), moderate (2.0-4.9) or severe (5.0-8.0). Results from this biocompatibility safety study indicate that AC5's peptide structure and mechanism of action, which is based on the formation of a local physical-mechanical barrier at the wound site, does not promote application site erythema or edema, which are indices of irritation. This study represents further data supporting the absence of toxicity for AC5, and represents an important step in demonstrating biocompatibility of AC5.

Arch Therapeutics President and CEO Terrence Norchi, MD, stated, "These promising results underscore our positive expectations for AC5. We look forward to additional studies with AC5 that indicate its potential value in terms of safety, efficacy and user-friendliness."

About Arch Therapeutics, Inc.
Arch Therapeutics, Inc. is a medical device company developing a novel approach to stop bleeding (hemostasis) and control leaking (sealant) during surgery and trauma care. Arch is developing products based on an innovative self-assembling peptide technology platform to make surgery and interventional care faster and safer for patients. Arch's flagship development stage product candidate, known as AC5 Surgical Hemostatic Device, is being designed to achieve hemostasis in minimally invasive and open surgical procedures.

Find out more at www.archtherapeutics.com.

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On Behalf of the Board,
Terrence W. Norchi, MD
Arch Therapeutics, Inc.