TEST REPORT

LINGKE

E-Mail : lingkebio-detection@outlook.com

Web: https://www.lingkebio-detection.com

Task Number :#202678

Client : changyuanpolypeptide

Customer website : https://www.changyuanpolypeptide.com/

Sample : b12

Manufacturer : changyuanpolypeptide

Batch : 2026/06

Trademark : changyuan

Specification : 1mg*10vials

Physical form : powder

Sterility : Pass

Endotoxins : pass-＜1EU/mg

Metal : Pass -< 50 ppb

Sample description:

Pictures not included.

Tests requested:

Assessment of a peptide vial or vials.

Results:

Product Name	Specifications	Purity
b12	1mg*10vials	99.56%

Comments:

none

Analysis conducted: 2026-06-27

Signature: Signature Stamp

Verify this test at https://www.lingkebio-detection.com / with the following unique key

PEP260609CY078