LH Monitor

What is a P+3 Progesterone test?

The P+3 progesterone lab test was developed by Dr. Thomas Hilgers after 30+ years of research. He published a study in 2020 which indicated that a progesterone level drawn on P+3 was a good marker to determine that an "ovulatory event" has passed. Please note, the only way to determine if a "healthy ovulation" has occurred is via a Follicular US series.

The P+3 test can be used if a woman is lacking confidence using the CREIGHTON MODEL FertilityCare™ System (CrMS), such as in the case where she may have a "continuous mucus pattern", which can make identifying a true Peak day more challenging.

Table 1 below represents the P+3 progesterone interpretation used by many NaPro providers.

Table 1: P+3 Progesterone Level Interpretation

- 0.0–1.0 ng/mL: You have either not yet had an ovulatory event or you are within twenty-four hours of starting your period.

- 1.1–2.3 ng/mL: You are in the midst of an ovulatory event. Repeating another level in forty-eight hours should clarify your situation. You should consider yourself fertile.

- 2.4–3.0 ng/mL: You have almost for certainly had an ovulatory event. To be absolutely sure, a repeat level in twenty-four to forty-eight hours will clarify it. You are most likely not fertile until your next period starts.

- 3.1 ng/mL or >: You have had an ovulatory event, and you are naturally infertile until the start of your next menstrual period.

PLEASE NOTE: This test is not for medical, diagnostic or therapeutic purposes. It is for assisting you in identifying a natural ovulatory event and it is intended for use in association with the CREIGHTON MODEL FertilityCare™System.

Reference:

Hilgers TW. The Identification of Postovulation Infertility with the Measurement of Early Luteal Phase (Peak Day +3) Progesterone Production. Linacre Q. 2020 Feb;87(1):78-84. doi: 10.1177/0024363919885551. Epub 2019 Nov 13. PMID: 32431450; PMCID: PMC7016439. Full article here:

Inaccuracies of the LH-Urinary Monitor (like ClearBlue) for women with PCOS and/or Infertility

LH-monitors are most often NOT accurate in women with infertility for a number of reasons:

LH-monitors are unreliable and often inaccurate in women with PCOS and in women who are being treated for Infertility or recurrent miscarriage.
LH-monitors are inaccurate when women are taking fertility drugs such clomiphene (Clomid), Letrozole, and/or HCG.
Urinary LH rises approximately 24 hours after blood LH rises. Thus, if a women is trying to achieve a pregnancy she may miss the optimal window for conception.
Women who have PCOS often have consistently high levels of LH and estrogen, either of which will render inaccurate results.
LH-monitors are also inaccurate when a woman is taking tetracycline antibiotics, which are often given to treat acne (common in PCOS) and to treat UTIs (urinary tract infections).

See the ClearBlue Monitor leaflet, attention to the section entitled "Further Information" here: https://www.clearblue.com/sites/default/files/wysiwyg/products/leaflets/506039-10%20English.pdf

Queen of Hearts NaPro Technology- Natural Treatments for Women

NaProTECHNOLOGY

What is a P+3 Progesterone test?

Table 1: P+3 Progesterone Level Interpretation

Inaccuracies of the LH-Urinary Monitor (like ClearBlue) for women with PCOS and/or Infertility

NaProTECHNOLOGY

What is a P+3 Progesterone test?

Table 1: P+3 Progesterone Level Interpretation

Inaccuracies of the LH-Urinary Monitor (like ClearBlue) for women with PCOS and/or Infertility

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