Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  POLAN MARY LAKE PH D
 2. Date of Event Requiring Statement (Month/Day/Year)
08/07/2018		 3. Issuer Name and Ticker or Trading Symbol
CHEMBIO DIAGNOSTICS, INC. [CEMI]
(Last)
(First)
(Middle)
3661 HORSEBLOCK ROAD		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

MEDFORD, NY 11763		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
None (1) 0 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Purchase Common Stock 08/07/2018 08/07/2023 Common Stock 9,375 $ 11.45 (2) D  
Option to Purchase Common Stock 08/07/2019 08/07/2023 Common Stock 9,375 $ 11.45 (2) D  
Option to Purchase Common Stock 08/07/2020 08/07/2023 Common Stock 9,375 $ 11.45 (2) D  
Option to Purchase Common Stock 08/07/2021 08/07/2023 Common Stock 9,375 $ 11.45 (2) D  
Option to Purchase Common Stock 08/07/2022 08/07/2023 Common Stock 9,375 $ 11.45 (2) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
POLAN MARY LAKE PH D
3661 HORSEBLOCK ROAD
MEDFORD, NY 11763		        

Signatures

/s/ Mary Lake Polan 08/13/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) No securities beneficially owned immediately prior to appointment.
(2) "Close/Last" price as reported by NASDAQ on August 7, 2018.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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