Why do test result lines, especially the control line, vary in color and intensity from one test to another and does this mean the tests are defective?
A. No. All urine based LH tests are intended to be used with each test independent from any other test. Once a positive test is obtained testing should be stopped. the LH surge has begun. Test results, including the color or intensity of test or control lines, cannot be compared or correlated one test to another. The reason is too many independent variables are involved in each test eg: urine concentration (or dilution), amount of sample used etc. Because one control all the variables involved with each individual test, you cannot correlate or draw conclusions from different test results. Not only will the result line vary in color and intensity test to test but also the control line will vary in color and intensity test to test. it all depends on the testing variables present for that particular test.
Related Questions
- Why do test result lines, especially the control line, vary in color and intensity from one test to another and does this mean the tests are defective?
- The test line is very faint and the control line is very strong at the 5 minute read time. What does this mean?
- Whats it mean if the line goes from a flat horizontal to spiked verticle line during a nerve conduction test?
