HCG pregnancy test strips are primarily used to detect pregnancy in women through urine analysis. Typically, the appearance of two red lines indicates pregnancy. If there is one dark line and one faint line, it suggests a possible pregnancy. The specific steps for conducting the test are as follows:

1. First, check the HCG packaging for any signs of damage to ensure it doesn't affect the test results.

2. Take a clean, disposable cup and collect the first-morning urine sample.

3. Open the test strip and immerse the end with the arrowhead into the urine, making sure not to exceed the maximum level indicated by the detection line. Keep it immersed for five seconds, then remove the strip and place it flat.

4. If the urine test strip shows two red lines, it indicates that the woman is pregnant, and the test result is positive. If there is only one red line on the early pregnancy test strip, it indicates no pregnancy. Additionally, when conducting the HCG test, it is important to pay attention to the effectiveness of the test strip.