When Pregnancy Test turns positive

The positive results of the pregnancy test depend on a number of conditions such as level of HCG contained in the blood or urine, timing as well as sensitivity of the tests.

For the pregnancy test to turn positive you need to wait till the egg is fertilized and implanted to the uterus. It is in this condition, that high amount of HCG hormone passes into the blood stream and the urine. This is the time when pregnancy test can yield positive results. Implantation occurs when the fertilized egg gets implanted in the endometrium which happens week after the process of ovulation. There after you require another period of about 3 to 4 days after the process of implantation for the blood test of pregnancy to be positive.

The blood pregnancy test can come up with positive results usually after a period of three to four days after the process of implantation, or about nine to ten days after the process of fertilization as well as ovulation has taken place.

There are urine pregnancy tests which can be carried out after a woman has missed a period. According to the experts this is one of the best times when you can expect positive results from the pregnancy test. In a test conducted about 25% of the women were tested to be positive. Variation in the urine test tends to vary depending on a number of factors which are stated below:

There is a wide range of variation between the levels of HCG in urine as well as in blood. In case a woman has low levels of HCG hormone, it is advisable that she takes the test after few days to deduce positive results.

The pregnancy test is known to determine levels of HCG hormone in the urine or in the blood streams. The HCG hormone in urine comes from HCG in blood which gets filtered from the kidney. Once the process of ovulation is over, the fertilized egg travels through the fallopian tube towards the uterus. This entire process takes about 1 week. During the time of implant, the placenta starts producing HCG hormone which enters into the blood stream. Detection of HCG by the pregnancy test depends to a great extent on the timing of implantation. The HCG hormone can be detected normally after 9 to 16 days when the ovulation has taken place.

The levels of HCG hormone in the urine tend to vary depending on the amount of water which you have taken. It is advised that you use your first urine in the morning which has not been diluted with water. Adequate concentration of HCG is favoured if you are trying to derive positive pregnancy test results.

The sensitivity of the pregnancy test which is used in home tends to vary. Sensitivity of about 20 mIU/mL will require 1 level of HCG for the pregnancy test result to be positive. Again there are some test results which require 40 mIU/mL of sensitivity level for coming up with positive results.