SECURED CONVERTIBLE NOTES PAYABLE	12 Months Ended
Sep. 30, 2018
Short-term Debt [Abstract]
SECURED CONVERTIBLE NOTES PAYABLE	NOTE G- SECURED CONVERTIBLE NOTES PAYABLE On August 31, 2018, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with accredited investors and certain members of its management team and Board of Directors (the “Purchaser”), pursuant to which the Company issued and sold an aggregate of $1,650,000 in principal amount of secured convertible notes (the “August 31^st Notes”) bearing interest at a rate of 6% per annum. As part of the August 31^st Notes, the Company’s management and members of the Board of Directors including the Chairman, President and Chief Executive Officer, purchased August 31^st Notes with a principal amount of $1,185,000. The August 31^st Notes are convertible, in whole or in part, at any time, at the option of the Purchasers, into shares of the Company’s Common Stock, in an amount determined by dividing the principal amount of each August 31^st Note, together with any and all accrued and unpaid interest, by the conversion price of $2.50. The Company has the right to require the Purchasers to convert all or any part of their August 31^st Notes into shares of its Common Stock at a conversion price of $2.50 if the price of the Common Stock remains at a closing price of $3.50 or more for a period of twenty consecutive trading days. Upon any Change in Control (as defined in the August 31^st Notes), the Purchasers have the right to require the Company to redeem the August 31^st Notes, in whole or in part, at a redemption price equal to such August 31^st Notes’ outstanding principal balance plus accrued interest. The August 31^st Notes contain certain events of default that are customarily included in financing of this nature. If an event of default occurs, the Purchasers may require the Company to redeem the August 31^st Notes, in whole or in part, at a redemption price equal to such notes’ outstanding principal balance plus accrued interest. The August 31^st Notes bear interest at the rate of 6% per annum, payable semi-annually in cash or in kind, at the Company’s option, and are due and payable in full on August 30, 2021. Until the principal and accrued but unpaid interest under the August 31^st Notes is paid in full, or converted into shares of common stock pursuant to their terms, the Company’s obligations under the August 31^st Notes will be secured by a lien on substantially all assets of the Company (excluding certain cash accounts) and the assets of APDN (B.V.I.) Inc. The Company has also entered into a registration rights agreement, dated as of the date of the Purchase Agreement (the “Registration Rights Agreement”), with the Purchasers, pursuant to which it has agreed to prepare and file a registration statement with the SEC to register under the Securities Act of 1933, as amended (the “Securities Act”) resales from time to time of the Common Stock issued or issuable upon conversion or redemption of the Notes. The Company is required to file a registration statement within 60 days of receiving a demand registration request from holders of a majority of the outstanding principal balance of the Notes, and to cause the registration statement to be declared effective within 45 days (or 90 days if the registration statement is reviewed by the SEC). The Company recorded $64,848 to debt issuance costs based on the cost incurred to complete the financing. During the fiscal year ended September 30, 2018, the Company amortized $1,479 of debt issuance costs resulting in unamortized debt issuance costs of $63,369 and carrying value of $1,586,631 at September 30, 2018. The debt issuance cost will be amortized over the life of the Notes. During the fiscal year ended September 30, 2018, the Company incurred approximately $8,136 of interest expense and for the fiscal year ended September 30, 2018. The effective interest for the fiscal year ended September 30, 2018 was 7.4%. On November 29, 2018, the Company closed a securities purchase agreement with its chairman, president and chief executive officer and one member of the management team, pursuant to which the Company issued and sold an aggregate of $550,000 in principal amount of secured convertible notes bearing interest at a rate of 6% per annum (the “November 29^th Notes”). The November 29^th Notes are substantially similar to the Company’s August 31 Notes except with respect to maturity date. The November 29^th Notes are secured on a pari passu basis with the same Company assets as the August 31 Notes.

SECURED CONVERTIBLE NOTES PAYABLE

12 Months Ended

Sep. 30, 2018

NOTE G- SECURED CONVERTIBLE NOTES PAYABLE

On August 31, 2018, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with accredited investors and certain members of its management team and Board of Directors (the “Purchaser”), pursuant to which the Company issued and sold an aggregate of $1,650,000 in principal amount of secured convertible notes (the “August 31^st Notes”) bearing interest at a rate of 6% per annum. As part of the August 31^st Notes, the Company’s management and members of the Board of Directors including the Chairman, President and Chief Executive Officer, purchased August 31^st Notes with a principal amount of $1,185,000.

The August 31^st Notes are convertible, in whole or in part, at any time, at the option of the Purchasers, into shares of the Company’s Common Stock, in an amount determined by dividing the principal amount of each August 31^st Note, together with any and all accrued and unpaid interest, by the conversion price of $2.50. The Company has the right to require the Purchasers to convert all or any part of their August 31^st Notes into shares of its Common Stock at a conversion price of $2.50 if the price of the Common Stock remains at a closing price of $3.50 or more for a period of twenty consecutive trading days.

Upon any Change in Control (as defined in the August 31^st Notes), the Purchasers have the right to require the Company to redeem the August 31^st Notes, in whole or in part, at a redemption price equal to such August 31^st Notes’ outstanding principal balance plus accrued interest.

The August 31^st Notes contain certain events of default that are customarily included in financing of this nature. If an event of default occurs, the Purchasers may require the Company to redeem the August 31^st Notes, in whole or in part, at a redemption price equal to such notes’ outstanding principal balance plus accrued interest.

The August 31^st Notes bear interest at the rate of 6% per annum, payable semi-annually in cash or in kind, at the Company’s option, and are due and payable in full on August 30, 2021. Until the principal and accrued but unpaid interest under the August 31^st Notes is paid in full, or converted into shares of common stock pursuant to their terms, the Company’s obligations under the August 31^st Notes will be secured by a lien on substantially all assets of the Company (excluding certain cash accounts) and the assets of APDN (B.V.I.) Inc.

The Company has also entered into a registration rights agreement, dated as of the date of the Purchase Agreement (the “Registration Rights Agreement”), with the Purchasers, pursuant to which it has agreed to prepare and file a registration statement with the SEC to register under the Securities Act of 1933, as amended (the “Securities Act”) resales from time to time of the Common Stock issued or issuable upon conversion or redemption of the Notes. The Company is required to file a registration statement within 60 days of receiving a demand registration request from holders of a majority of the outstanding principal balance of the Notes, and to cause the registration statement to be declared effective within 45 days (or 90 days if the registration statement is reviewed by the SEC).

The Company recorded $64,848 to debt issuance costs based on the cost incurred to complete the financing. During the fiscal year ended September 30, 2018, the Company amortized $1,479 of debt issuance costs resulting in unamortized debt issuance costs of $63,369 and carrying value of $1,586,631 at September 30, 2018. The debt issuance cost will be amortized over the life of the Notes. During the fiscal year ended September 30, 2018, the Company incurred approximately $8,136 of interest expense and for the fiscal year ended September 30, 2018. The effective interest for the fiscal year ended September 30, 2018 was 7.4%.

On November 29, 2018, the Company closed a securities purchase agreement with its chairman, president and chief executive officer and one member of the management team, pursuant to which the Company issued and sold an aggregate of $550,000 in principal amount of secured convertible notes bearing interest at a rate of 6% per annum (the “November 29^th Notes”). The November 29^th Notes are substantially similar to the Company’s August 31 Notes except with respect to maturity date. The November 29^th Notes are secured on a pari passu basis with the same Company assets as the August 31 Notes.