When to use test paper (pH)

Hello everyone, if you still don’t know much about when to use test strips, it doesn’t matter. Today, this site will share with you the knowledge about when to use test strips, including pH issues. I will analyze it for everyone, and I hope it can solve everyone\’s problems. Let\’s get started!

Contents of this article

1. Can I use early pregnancy test paper to test pregnancy in the afternoon
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   2. How many days can you take pregnancy test strips
   3. Can ovulation test strips be used after menstruation? When should I start testing
   4. When should I use the pregnancy test stick
   5. Precautions for using pH test paper
   6. When to use pH*** test paper

   1. Can I use early pregnancy test paper to test pregnancy in the afternoon?

   Use early pregnancy test paper to test Pregnancy can be performed in the afternoon, but the accuracy is lower. Early pregnancy test paper pregnancy test mainly detects the HCG level in urine. Morning urine is generally chosen as the sample because morning urine is more concentrated and contains a higher HCG concentration and a higher accuracy, while afternoon urine has a lower concentration. , contains low levels of HCG, and may not be able to detect pregnancy if the pregnancy is short.

   2. How many days of pregnancy can you take test strips

   The earliest one week after intercourse Or two weeks, you can use test strips to detect it. If you are pregnant, you should pay attention to rest, strengthen nutrition, eat more fresh fruits and vegetables, eat more fish, eggs, and soy products, and ensure 1 to 2 bags of pure milk every day, do not mention Heavy food, eat less spicy food, no raw or cold food, less pickled food, smoked and grilled food, no smoking, no drinking.

   3. Is the ovulation test paper used after menstruation? When should I start testing?

   Ovulation test paper is a test method to determine ovulation based on the peak value of luteinizing hormone in the body. It needs to be used after menstruation. It can be used from the tenth day of menstruation. When ovulation is about to occur, the ovulation test paper will generally show It is a strong positive test. After ovulation, the test paper will turn from strong positive to negative. Ovulation test strips are not very accurate and may be false.Positive.

   4. When is the best time to use the pregnancy test stick

   If you have menstruation Normally, morning urine is collected about 20 days after the last sexual intercourse during the ovulation period, and the most accurate detection is with a pregnancy test strip. If it is too early, the concentration of HCG in the urine is still very low, so the early pregnancy test cannot be passed unless the blood HCG test is performed. Since blood HCG is relatively sensitive, HCG can be detected by collecting blood 15 days after the same bed. It is also recommended that if using the urine HCG test, not to drink too much water before collecting the urine.

   5. Precautions for using pH test paper

   3. Test paper Do not touch test tube mouths, bottle mouths, catheter mouths, etc.

   4. When measuring the pH of a solution, the test paper should not be wetted with distilled water in advance, because wetting the test paper is equivalent to diluting the solution being tested, which will lead to inaccurate measurements. precise.

   The correct method is to use a glass rod dipped in the solution to be tested and drop it on the middle of the test paper. After the test paper changes color, compare it with the standard color card to determine pH of the solution.

   5. After taking out the test paper, the container holding the test paper should be tightly closed to avoid being contaminated by some gases in the laboratory

   6. It must be used at room temperature, otherwise the results will be inaccurate.

   6. When to use pH*** test strips

   1 , PH test paper usually refers to early pregnancy test paper, which can measure hCG in urine. It is generally recommended to test through morning urine 10 days after sexual intercourse or after menstruation is delayed. The measured results are accurate.

   2. Early pregnancy test strips determine pregnancy by measuring hCG levels in urine, and hCG can only be secreted after the fertilized egg implants. Generally speaking, an increase in hCG can be measured in urine about 10 days after ovulation. The reason why it is recommended to use morning urine for testing is because the concentration of hCG in urine at this time is relatively high and is less affected by factors such as diet, making it easier to detect and the results are relatively accurate. If the test result shows two red bars, it is confirmed that you are pregnant; if the monitoring result shows one red bar, it is recommended to retest after 3 days. If it is still negative, pregnancy can be ruled out.

   3. When the results of the early pregnancy test paper are not convincing enough, the most accurate way is to go to the hospital to collect venous blood after 10 days of pregnancy and test the human chorionic gonadotropin level to determine whether you are pregnant.

   OK, this article ends, I hope it will be helpful to everyone.