How to read pregnancy test sticks: Hot topics on the Internet in the past 10 days and usage guide
Recently, the use of pregnancy test sticks and interpretation of results have become one of the hot topics on social platforms. Many women are prone to anxiety when using it for the first time due to improper operation or misunderstanding of the results. This article will combine the hot discussions on the Internet in the past 10 days and present the principles, usage steps and common questions of pregnancy test sticks with structured data to help you obtain accurate results.
1. How the pregnancy test stick works
Pregnancy tests detect pregnancy by detecting human chorionic gonadotropin (hCG) in urine. hCG begins to be secreted after the fertilized egg implants, and its concentration increases with gestational age.
| hCG concentration range (mIU/mL) | Corresponding to gestational age |
|---|---|
| 5-50 | 1-2 weeks of pregnancy |
| 50-500 | 2-3 weeks of pregnancy |
| 500-10,000 | 3-4 weeks of pregnancy |
2. Steps for using the pregnancy test stick (the correct procedure is hotly discussed on the Internet)
| steps | Operational points | Common mistakes |
|---|---|---|
| 1. Prepare | The first urine in the morning has the highest concentration | Test after drinking a lot of water |
| 2. Sampling | Aim the urine area at the urine stream for 3-5 seconds | Soak beyond the MAX line |
| 3. Wait | Lay it flat and wait for 3-5 minutes | Read the invalid result after 10 minutes |
3. Interpretation of results (high-frequency questions in the past 10 days)
| display type | Illustration | medical significance |
|---|---|---|
| two red lines | Test line (T) + control line (C) | Positive (pregnant) |
| a red line | Control line only (C) | Negative (not pregnant) |
| light colored thread | The T line is lighter in color than the C line | Weak positive (retest required) |
4. Five things to note that are hotly discussed on the Internet
1.Best detection time: The accuracy rate can reach 99% after menstruation is delayed for 1 week, but some sensitive products claim that it can be measured 4 days before menstruation.
2.drug interference: Ovulation induction drugs may cause false positives, and diuretics may cause false negatives.
3.Abnormal results: In ectopic pregnancy, hCG rises slowly and may remain weakly positive.
4.Brand differences: The sensitivity of different brands ranges from 10mIU/mL to 25mIU/mL.
5.Saving conditions: Use within 30 minutes after opening. Humid environment will cause the test paper to fail.
5. Expert advice (from recent health searches)
• Continuous testing should be done 48 hours apart to observe the doubling of hCG
• After the morning urine test, it is recommended to retest on the same day for confirmation.
• Any abnormal results should be accompanied by a blood hCG test
• If the pregnancy test stick expires, the C-line will not develop.
It can be seen from the above structured data that the correct use of pregnancy test sticks requires attention to three key aspects: testing timing, operating specifications and result interpretation. If you still have questions, it is recommended to consult a gynecologist for professional guidance.
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