1. Appearance The components of the kit are complete, and the test strip is not damaged or contaminated。 The width of strip is not less than 2.5 mm, and the liquid migration speed is not less than 10 mm/min. 
2.Coincidence Rate a. Positive reference coincidence rate: The all of the positive reference P1-P10 should have a positive result, and the  coincidence rate should be over than 90%. There should be no more than one false negative judgment result. b. Negative reference coincidence rate: The all of the negative reference N1-N10 should have a negative result, and  the coincidence rate should be over than 90%. There should be no more than one false positive judgment result. 
3.Repeatability: When using the enterprise repeatability reference material for testing, each of R1 and R2 is tested 10 times, with no  more than one false negative and one false positive determination, and the repeatability is ≥90%.
4.Limit of Detection Use the enterprise detection limit reference material L1-L4 for detection, the minimum detection limit is not higher  than 200ng/mL, L1-L3 results should be positive, L4 is not required. 
5.Inter batch difference Using 10 samples from 3 batches of products, the test kit was used to test the repeatability reference R1 of the  enterprise. The reaction results of all 3 batches should be positive and the color should be uniform. 
6.Analysis specificity The content of 500μg/mL sheep, chicken, rabbit, dog, pig and cow hemoglobin, 100μg/mL vitamin C, 2000μg/mL  horseradish peroxidase, and 7μg/mL Compound Cold and Flu Granules have no effect on the test results.
7.Hook effect: When the concentration of human hemoglobin of the samples tested was lower than 2000μg/mL, it  did not affect the test results.