Analysis for hCG: normal, indications, transcript

Normally hCG appears in the blood after implantation of the embryo into the endometrium. This happens after conception in a week. The presence of hCG in the blood outside of pregnancy is an alarming symptom. This indicates the presence in the body of a tumor that produces this hormone.

In pregnancy, hCG is synthesized by the chorion of the embryo. It is thanks to him that the yellow body functions in a strengthened mode and secrete progesterone. This hormone is responsible for maintaining the pregnancy, preventing the uterus from contracting.

Also, hCG, the rate of which depends on the term, provides the release of estrogens and testosterone, necessary for the normal course of pregnancy and fetal development. After the placenta is fully formed, it takes on this function. However, in the first trimester, hCG is responsible for this.

Therefore, the analysis on it is used not only to diagnose pregnancy, but also to track its development. The fact is that during this period the level of the hormone increases twice every two days. By the end of the first trimester, its concentration is maximal and then begins to decrease.

The mismatch of hCG norms is an alarm and can be a sign of various pathologies. Determination of its level necessarily enters prenatal screening.

The analysis for HCG, the norm of which depends on the laboratory, should be given on an empty stomach in the morning. If the goal is earlier detection of pregnancy, then this should be done after a delay of 5 days. It is necessary to warn staff about the drugs taken.

Screening for the first trimester is usually carried out from 11 to 14 weeks, and 2 - from 14 to 18. More precise time should be checked with your gynecologist. To monitor the course of pregnancy in the first trimester, hCG may be given periodically at the discretion of the physician, since not only its concentration but also the dynamics of growth are important.

So, the norms of hCG for weeks:

• 1-2-30-305;
• 2-3 - 1505-5005;
• 3-4 - 10005-30005;
• 4-5 - 20005-100005;
• 5-6 - 50005-200005;
• 6-7 - 50005-200005;
• 7-8 - 20005-200005;
• 8-9 to 20005-100005;
• 9-10 - 20005-95005;
• 11-12 - 20005-90005;
• 13-14 15005-60005;
• 15-25 to 10005-35005;
• 26-37-10005-60005.

Outside of pregnancy, its level should not exceed 5 mU / ml. In the result form, each laboratory indicates its own norms, which may differ slightly from the values given above. It is also necessary to clarify how the time is counted - from conception or from the date of the last month.

When taking an analysis for hCG, the norm may be exceeded in the following cases:

• Taking drugs with hCG;
• Bladder skidding;
• Gastrointestinal tumors;
• After childbirth and abortion;
• Chorion carcinoma;
• Neoplasms of the uterus, testicles, kidneys, lungs;
• Reception of progestogens;
• Pathology and malformations of the fetus;
• Gestosis, toxicosis;
• Wrong time;
• diabetes;
• Several fruits.

Low levels of hormones can occur in the following situations:

• Pregnancy overstretch;
• Danger of miscarriage;
• Frozen pregnancy;
• Death of the fetus;
• Placental insufficiency ;
• Lag in the development of the fetus;
• ectopic pregnancy.

The analysis should be analyzed only by a doctor. You can not diagnose yourself.

To pass the analysis on hCG it is necessary in the following cases:

• Diagnosis of tumors (bladder skidding, chorionepithelioma, etc.);
• Dynamic observation of bearing;
• Elimination of tubal pregnancy;
• Absence of menstruation;
• Prenatal diagnosis of fetal pathologies;
• risk of miscarriage;
• Check the completeness of abortion;
• Diagnosis of pregnancy;
• Suspicion of a frozen pregnancy.

In normal pregnancy tests, HCG is also determined. The norm in this case is a negative result for women who do not bear a child, and men. For a pregnant woman, it should be positive after a delay of a week. The fact is that in the urine the concentration of the hormone increases more slowly than in the blood.

So, hCG, the norm of which depends on the presence of pregnancy and its term, is produced in the body by the chorion of the embryo and tumors that produce this hormone. The analysis on it helps to find out about maternity, to observe the bearing, to suspect the pathology of the fetus, to diagnose cancer.