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Hcg Levels At 5 Weeks

Hcg Levels At 5 Weeks

Where does hCG come from?

hCG is produced by the cells which will eventually become the placenta. Long before it is fully formed, the early placental tissue sends a message to the site of the ovarian follicle where the egg was released. This area is known as the corpus luteum and it plays a really important role in influencing the production of oestrogen and progesterone. These hormones are responsible for building up a rich vascular (bloody) lining in the walls of the uterus which will nurture and feed the developing embryo before the placenta has had a chance to form. Without this feedback loop occurring, the chances of the embryo surviving would be pretty slim. Issues relating to the function of the corpus luteum are thought to account some women experiencing fertility problems and early miscarriage.

What do I need to know about hCG?

  • Most pregnant women don’t know what their individual hCG reading is or will be.
  • Even if you do find out your hCG level, don’t make too much of it. A low reading of hCG can still mean you are going to have a healthy pregnancy and baby.
  • A pregnancy ultrasound gives a more accurate outcome prediction than an hCG reading done in isolation.
  • An hCG reading which is measured at less than 5mlU/ml is insufficient for there to be a positive pregnancy result. A reading above 25 mlU/ml is high enough to be considered pregnancy positive.

What can a high hCG mean?

There are a few reasons why a woman’s hCG can be particularly high. Miscalculation of pregnancy dates, carrying a multiple pregnancy or very rarely, a molar pregnancy. It is common for health care providers to recommend repeat testing with 48-72 hours to check for changes in the level of hCG.

hCG tips

Don’t get too worked up about your hCG levels. There’s little you can do to influence them and worrying and agonising over what your level is will do nothing but cause you undue stress.

In order to definitively know your hCG level it’s necessary to have blood tests. hCG levels can vary at different times of the day, from day to day and week to week. Remember – a one off hCG reading doesn’t provide much information; only what the level is at that specific point in time. It’s the pattern of readings and levels which gives a far more accurate indication of the status of the pregnancy and its viability.

How Physicians Interpret hCG Results

It is important to note that any single hCG test in early pregnancy does not tell much about the health of a pregnancy or fetus because individual women have a wide variation in hCG levels, and even one woman may experience wide variation in hCG numbers from one pregnancy to the next.

Rather, physicians look at the trend in the number among two or more tests. The hCG doubling time, over two separate blood tests spread over a period of days, usually provides more useful information than a single hCG level when evaluating a pregnancy. In most cases, the number will double over a period of 48 to 72 hours.

Comparing Slow Rising And Normal Rising hCG Levels

Comparing changes in hCG titers with those of established expected curves can help the doctor determine what to do about the pregnancy and how to counsel the patient. However, there are many limitations to the serial assessment of hCG titers and the titers should never be used exclusively to replace clinical judgment based on symptoms or signs.

A normally rising hCG level would usually be a level that rises over 60% over a 48 period, though later on in pregnancy, the rise would be normally slower. Seebert et al reported in 2006 and Morse confirmed this in 2012 that a rise of at least 35% over 48 hours was proposed as the minimal rise consistent with a viable intrauterine pregnancy.

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