Reporter occupation is lay user/patient.The patient purchased the meter from an outside source, not from an approved distributor.The patient also stated the test strips are purchased "online" but does not know where.The test strips were requested for investigation.The product has not been received at this time.If the product is returned in the future, a follow up report will be submitted.Relevant retention test strips (lot 405011) were tested in comparison with the master lot coaguchek xs pt.For this purpose, two human blood samples from marcumar donors and two internal reference meters were used.Retention samples were acceptable.No error messages occurred.The investigation did not identify a product problem.The cause of the event could not be determined.
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