We received an allegation of questionable inr result with coaguchek xs meter serial number (b)(6).At 3:58 pm, the meter result was 4.0 inr using test strip lot 70302123.Customer stated the test strip came apart upon removal from the meter after the test.At 4:02 pm, the meter result using test strip lot 72704121 with expiration date 31-mar-2025 and the same finger as the initial test was 3.0 inr.At 4:12 pm, the meter result using test strip lot 72704121 and a new finger was 3.0 inr.The customer's therapeutic range is 2.0-3.0 inr.Customer tests on a bi-weekly basis.
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