CHATSWORTH, Calif.--(BUSINESS WIRE)--North American Scientific, Inc. (NASDAQ:NASI) today announced that it received a notice from The NASDAQ Stock Market (“NASDAQ”) dated October 5, 2007 indicating that for the last 30 consecutive business days, the bid price of the Company’s common stock has closed below the minimum $1.00 per share requirement for continued inclusion under Marketplace Rule 4450(a)(5) (the “Rule”). Therefore, in accordance with Marketplace Rule 4450(e)(2), the Company has 180 calendar days, or until April 2, 2008, to regain compliance. If, at anytime before April 2, 2008, the bid price of the Company’s common stock closes at $1.00 per share or more for a minimum of 10 consecutive business days, the Company understands that NASDAQ’s Staff will provide written notification that the Company has achieved compliance with the Rule. If the Company does not regain compliance with the Rule by April 2, 2008, the Company understands that NASDAQ’s Staff will provide written notification that the Company’s common stock will be delisted. At that time, the Company may appeal the Staff’s determination to delist its common stock to a NASDAQ Listing Qualifications Panel.