If the control line is not visible, the test result may not be reliable. In this case, please contact customer center and we will check the result and respond.
There are three circumstances when different values result from the same sample.
For clarification, please check whether the band appears the same in the previous and the latter kit.
If the appearance of the band is different, the sample preparation was inaccurate. Place the serum in a buffer solution and shake well before applying. Discard initial 10 drops and dispense three drops in the kit to get an accurate value.
If the bands appear the same, the result may be within the borderline of the reference value, or in very rare cases, the kit may be defective. In this case, please contact us and we will help you confirm.