Xtant Medical (XTNT) 10-K 2012 FY Annual report

Exhibit 32.2

Section 1350  Certification of Chief Financial Officer

In connection with the Annual Report on Form 10-K of Bacterin International Holdings, Inc. (the "Company") for the annual period ended December 31, 2012 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, John P. Gandolfo, Chief Financial Officer of the Company, certify, to the best of my knowledge and belief, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a) or 78o(d)); and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ John P. Gandolfo

John P. Gandolfo

Chief Financial Officer

March 27, 2013