Ovulation Testing What is ovulation testing? Types of ovulation testing Tests of ovulatory function include basal body temperature charting, ovulation predictor kits and timed serum progesterone levels. Basal body temperature charting technique Obtain a BBT thermometer, available at your drug store. Place the thermometer at your bedside. The day after your menses begin, start recording your temperature.
Each morning, upon waking and before rising or any morning activity, and before drinking anything, take your temperature. Record the temperature on a BBT graph. Keep recording on a daily basis until your next menses begins.
The temperature should remain elevated for at least 11 days. If you do not get a temperature rise, or if the rise does not last 11 days, consult your doctor. As seen below, a normal temperature rise will last for a minimum of 11 days. It can take up to three days after ovulation for the temperature to rise.
However, in our experience most women experience temperature rises on the same day or a day later than when an ovulation predictor kit turns positive. The BBT chart shows ovulation with an adequate duration of the luteal phase. Notice that the temperature stayed elevated for 11 days or more.
This BBT chart shows ovulation with a short luteal phase. The temperature did not stay elevated for 11 days. This BBT chart shows no evidence of ovulation in this cycle. The one-day spike at day 23 is likely just a random event. In order to get a clear understanding of when you are ovulating or pregnant, you will need to track your BBT daily. You might also consider charting cervical mucus.
You can use a regular BBT thermometer not to be confused with a fever thermometer to catch a resting temperature as you wake early each morning. Or you could buy a Tempdrop! Using a wearable fertility tracker like Tempdrop will make identifying your most accurate BBT seamless! You will need to make a note of your daily temperature on your chart.
You can use a printable paper-pencil chart or you can use Tempdrop's integrated charting app or another charting app of your choice.
Once you have a few months worth of data to review you will begin to notice patterns and trends. This information will ultimately help you understand your ovulation time and help you detect pregnancy. In the book, The Fifth Vital Sign , Fertility Awareness Educator Lisa Hendrickson-Jack affirms that "your menstrual cycle is a vital sign, just like your pulse, temperature, respiration rate, and blood pressure.
One of the unbiased fertility signs you can track is your basal body temperature BBT. You can find a basal thermometer or digital thermometer in a pharmacy or in the pharmacy section in many grocery stores. You can also find kits that include materials for measuring and charting BBT. These items are low in cost.
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Top of the page. BBT is used by Clue to assess when ovulation has occurred. However, BBT alone cannot predict when ovulation will occur in the future. BBT is slightly lower in the follicular phase the first half of the menstrual cycle , and rises after ovulation and stays raised throughout the luteal phase the second half of the menstrual cycle 2,3. This rise in temperature happens in response to progesterone, which is released after ovulation occurs.
Progesterone prepares the uterus for the implantation of a fertilized egg. By following rules that combine the changes in BBT with carefully-tracked changes in cervical mucus, the most fertile days of the cycle can be estimated i. Average basal body temperature will vary between individuals, and depending on the time of the day and the activity.
You suspect that you are pregnant. Download Clue and start tracking your basal body temperature.
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