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What Is Basal Body Temperature?

When the body is in a state of wakefulness and quietness, not affected by muscle activity, mental tension, food, and environmental temperature, etc., it is called the "baseline state", and the temperature in this state is called the "basal body temperature", which is usually measured in the morning before getting up. Prepare the basal body thermometer with app in advance and maintain a quiet state during the measurement. Women's basal body temperature varies with the menstrual cycle, with a lower temperature during the follicular phase and a rise of 0.3-0.6℃ after ovulation. Basal temperature measurement helps to determine whether there is ovulation and the time of ovulation, and may also assist in analyzing the cause of menstrual disorders. In addition, it can help analyze the cause of abnormal uterine bleeding and has some reference value in evaluating corpus luteum function, predicting pregnancy or miscarriage, etc. Let Shecare China digital body thermometer supplier summary for you.

After the start of menstruation, there is a two-week period of low temperature when the body temperature drops. After ovulation, the temperature rises and a high temperature period of about two weeks before the next menstrual period starts. If the high temperature persists for two weeks without falling and the menstrual period has not arrived, it may be a sign of pregnancy. If the temperature does not rise and remains in the low temperature phase, it is possible that there is no ovulation.

Healthy women with normal ovulation have a repeating cycle of low and high temperature in their basal body temperature

Menstrual period

If not pregnant, the corpus luteum degenerates, and the secretion of estrogen and progesterone sharply decreases, leading to menstruation.

Follicular phase

The follicle grows and matures, and the endometrium begins to grow. In women with a menstrual cycle of 28 days, the low temperature phase lasts for two weeks from the start of menstruation to ovulation.

Ovulation period

The secretion of LH reaches its peak. When ovulation is about to occur, there is an increase in transparent, stretchy discharge. The basal body temperature enters the high temperature phase at ovulation.

Luteal phase

After ovulation, the follicle becomes a corpus luteum and the temperature increases. Compared to the low temperature phase, the basal body temperature increases by about 0.3-0.6℃ and lasts for about 10-14 days until the menstrual period starts.

Method of measuring basal body temperature

  • Prepare a thermometer (ordinary type is fine) and master the reading method to ensure accuracy.

  • Every night before going to bed, shake the mercury column of the thermometer below 35℃, and keep it within reach upon waking up.

  • Every morning after waking up (after sleeping for 6-8 hours), place the thermometer under the tongue for 5 minutes, take it out to read the temperature, and record it on the basal body temperature sheet.

  • Before measuring temperature, do not get up, go to the bathroom, eat, talk, etc.

  • Record various factors that may affect the basal body temperature, such as colds, insomnia, alcohol consumption, medication, etc.

Of course, if measuring and recording the basal body temperature causes pressure or even excessive tension, do not force it. Shecare is a manufacturer of bulk ovulation test strips and HCG pregnancy rapid test dipstick.  For more details about prices and minimum quantity, you can contact us by email.

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