Exhibit
31.2

Certification
of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a)

CERTIFICATION
PURSUANT TO

18
U.S.C. SECTION 1350,

AS
ADOPTED PURSUANT TO

SECTION
302 OF THE SARBANES-OXLEY ACT OF 2002



I,
Rene A. Schena, certify that:

|1.  | I
    have reviewed this Annual Report on Form 10-K of Arrayit Corporation;                                                                                                                                                                                                                                                                                                                            
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|2.  | Based on my
    knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary
    to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect
    to the period covered by this report;                                                                                 
|3.  | Based on my
    knowledge, the financial statements, and other financial information included in this report, fairly present in all material
    respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented
    in this report;                                                                                                    
|4.  | The registrant’s
    other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as
    defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange
    Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:                                                    
|(a) | Designed such
    disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,
    to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to
    us by others within those entities, particularly during the period in which this report is being prepared;             
|(b) | Designed such
    internal control over financial reporting, or caused such internal control over financial reporting to be designed under our
    supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial
    statements for external purposes in accordance with generally accepted accounting principles;                    
|(c) | Evaluated
    the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions
    about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based
    on such evaluation; and                                                                                                        
|(d) | Disclosed
    in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s
    most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially
    affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting;
    and





|5.  | The
    registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control
    over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors
    (or persons performing the equivalent functions):
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|(a) | All significant
    deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably
    likely to adversely affect the registrant’s ability to record, process, summarize and report financial information;
    and                         
|(b) | Any fraud,
    whether or not material, that involves management or other employees who have a significant role in the registrant’s
    internal control over financial reporting.                                                                                                                            





|Date:  April
    17, 2013 | Arrayit Corporation                    
|------------------------- | ---------------------------------------
|                          | By: /s/ Rene Schena                    
|                          | Rene Schena
    Chief Executive Officer