إعـــــــلان

**الفارس** · 23-03-2008, 02:55 AM

المشاركة الأصلية بواسطة el7assas-77 مشاهدة المشاركة

السلام عليكم ورحمة الله وبركاته

عندي حالة وحبيتكم تساعدوني بوضع النقاط على الحروف

One day, a patient on menses brought her urine sample to do pregnancy test

Pregnancy test was done and the result was POSITIVE. Later on, the doctor

requested B-HCG for confirmation and the result approved that the patient is pregnant

After few weeks, urine pregnancy requested again for this patient and the result was NEGATIVE

Could you please give me an explanation about this case

:sm196::sm196::sm196:

How patient on menses become pregnant

why urine pregnancy showed positive result and then it sowed negative
There is one disadvantage of high-sensitivity tests, and that is the case of a chemical pregnancy. A chemical pregnancy is essentially a miscarriage that takes place during the earliest stages of a pregnancy. With a chemical pregnancy, hCG is produced, but only for a short period of time as the pregnancy does not continue. In fact, a large percentage of pregnancies do result in miscarriage just shortly after implantation. This is a very different situation than a later-term miscarriage and women should understand that chemical pregnancies are not uncommon. Unless you are testing early, most women may not even be aware that they were pregnant as a chemical pregnancy will often end before any physical pregnancy symptoms manifest (including a missed period). With a very sensitive pregnancy test, it is possible to receive a positive result - and then later test negative if the woman experiences a miscarriage (chemical pregnancy).

او

Adhere to the test reaction time! If you go to Drugstore.com or any product review site, you will find many women complaining about false positive pregnancy tests. Actually, a false positive pregnancy test is quite rare. What may be happening here is that the test user is trying to read the test after the given reaction time specified by the manufacturer. The fact is, every test has a time interval that must be respected, typically between five and ten minutes. Any result determined after the reaction time should be disregarded or considered "invalid". Why? Two reasons. The first is that a test will become increasingly more sensitive over time and may indicate a very faint test line based on naturally levels of hCG (present in non-pregnant women and even men!). Second, sometimes the chemical composition of urine will cause a ghost line or evaporation line. Typically colorless, an evaporation line will only appear well after the given reaction time of the test. In other words, if you see an evaporation line, you should not be looking at the test anyway! In other words, if you see a ghost line, this is not a false positive, as the test reaction time has passed and the any result should be considered not valid.

المصدر
http://www.early-pregnancy-tests.com/compare.html
And one more question... Why we cannot test bloody urine for pregnancy

blood or protein in the urine may cause false-positive results
ويعتبر جواب للسؤال الي فوق
المصدر
http://www.labtestsonline.org/unders.../hcg/test.html
.
I hope I got the answers from you.... Thanks a lot

وبصراحة الحمد لله هالموضوع هذا انطرح علشان انا استفد منه كثير وبحثت واكسبت معلومات اول مرة اعرفها

**DelloCocci** · 23-03-2008, 04:21 AM

يعيطك ألف عافية الفارس على جهدك وبحثك والـ el7ssa على السؤال

كنت متحمسة للإجابة

**el7assas-77** · 23-03-2008, 01:59 PM

ألف شكر للاخ الفارس والله يعطيك العافية على بحثك و ع الموقع

بس سمحولي عندي مخ يصعب عليه يستقبل أي شي

يا ريت والله تبسط لي الاجابة أكثر

**antivirus** · 23-03-2008, 02:38 PM

مشكور على المجهود

إعـــــــلان

Case of Pregnancy

Case of Pregnancy

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