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OvuTest™ "Fertile Focus" Personal Saliva Fertility Prediction Microscope
Reusable • Proven Science  • Ovulation Prediction

A reusable mini-microscope to assist in the visual detection and identification of the increased system electrolytes (salts) normally preceding and during the female ovulation cycle using a saliva sample. Discreet, improved model resembles a lipstick case and utilizes a smart on/off sensor switch to activate the unit's light source. For Forensic Use Only*.


Fertilitygraphic.jpg (19610 bytes)The female fertility period occurs once during the monthly menstrual cycle. The ovum (egg) matures in approximately the middle of the cycle, about 14 days prior to the onset of menstruation. The fertility period peaks for 2 to 3 days with an average total duration of 4 to 6 days, though this can vary depending on many biological and environmental factors. Calculation of this fertile period using non-clinical or traditional methods can be quite inaccurate, especially in the case of women with irregular cycles. For couples wanting children, or concerned with family planning, the results can be frustrating at best. Consequently, the use of forensic tests based on the specific biological and hormonal phenomena occurring naturally in the female body during this fertility period can be useful in helping to maximize the chances of successful fertilization and resultant pregnancy and conversely, help to minimize the possibility of an unwanted pregnancy. Obviously by abstaining from intercourse during this fertility period, the possibility of pregnancy is greatly reduced.Ovulation FAQ

Ask the Expert
Woman's Day Magazine 9/1/03 pg 41
Q. Do those new Saliva-Based Ovulation Predictors work? Are they difficult to use?
A. According to preliminary data, they do seem to work as effectively as the conventional urine tests. The advantages are that they're less messy than urine kits and you can use them anywhere at any time. They are more expensive, about $60 a test kit compared to about $20 for the urine-based kits. But if you're tracking your cycle in an attempt to conceive, the newer test can be used multiple times for up to a year or more.
Laura Riley, M.D.
Assistant Professor of Obstetrics and Gynecology, Massachusetts General Hospital, Boston.

Fortunately, specific biological changes in the female body can indicate fertile and infertile periods. Often used is the traditional curve of the basal body temperature. In the first half of the cycle, shortly after the beginning of the menstrual period, the basal temperature is low. After the egg is released, the temperature rises. While this method has been used for years, it requires accurate and specific record keeping and results are often disappointing. More specific is testing for the peaking of production the female LH hormone which is discussed fully under the Ovulation page. Additionally, just prior to ovulation, electrolytes (or salts) increase dramatically in body fluids (e.g.. cervical mucus and saliva) along with the hormone estrogen. Consequently, being able to identify this increase in electrolytes (salts) is an alternative method for identifying the onset of ovulation.    

Historically, it has been clinically and scientifically observed that, during the fertile period, a sample of normal female saliva or cervical mucus when dried and examined under a microscope contains many structures resembling ferns. These fern structures are actually dried salt or electrolyte crystals present as a result of the electrolyte build up prior to and during ovulation. On all other days of the female cycle only shapeless, dotted structures can be seen. This natural phenomenon has been known for many years to researchers and medical professionals. However, a precision miniature microscope designed specifically to aid in the indication of the fertility period is now available. Any woman can now easily check her fertility cycle anytime, anywhere without the need for basal charting or urine samples. Saliva is the most accessible body fluid and easiest to obtain. There is no need for complicated blood or urine tests. "Fern" structuring starts 3-4 days before ovulation and ceases 2-3 after ovulation.  Despite its lipstick case appearance and small size, the OvuTest microscope is not a toy and is not disposable. The OvuTest microscope is a scientific instrument with a precision 58X power magnification lens that with proper care can be discreetly used over and over again. See the OvuTest™ "Fertile Focus" FAQ and Ovulation FAQ

Using the OvuTest™ "Fertile Focus" Saliva Microscope

  1. Eye piece housingRemove the lipstick type cover from the test device.

  2. Pull out the eyepiece/slide assembly from the instrument housing.

  3. Place a spontaneously produced sample of saliva (or cervical mucus) on the slide and reinsert the eyepiece/slide assembly into the instrument housing. (Note: licking the slide once produces an ideal sample amount) Allow the saliva sample to dry for approximately 5 minutes. This step is the most important part of the test procedure. Depending on humidity conditions, drying could take longer. A hairdryer can be used on the low setting to speed the drying time. This step is absolutely critical as the sample must be completely dry for crystallization to occur and to obtain accurate viewing results.

  4. Place the eyepiece close to one eye (remove glasses) and press the button at the base of the instrument to illuminate the sample for viewing. Focus by turning the threaded eyepiece until the sample is clearly visible. The resulting view will approximate the following:

    Rotate & Focus

    Infertile Period
    Dry, Clear 

    Fertile Period
    Fern Structures

    micro3.gif (5097 bytes)

    nfertilef.jpg (8832 bytes)

    fertilef.jpg (11366 bytes)

  5. Clean the slide thoroughly with water or a mild soapy solution using a cotton swab until clear and dry. Clean the slide in the same manner as you would your eyeglasses. An excellent cleanser is an enzymatic contact lens cleaner as this will remove any protein buildup on the slide. The entire eyepiece assembly can be soaked in this cleaner without damage to the optics. After rinsing drying, return the eyepiece to the housing. The OvuTest™ "Fertile Focus" Saliva Fertility Tester is now ready for the next test procedure. 

In more detail, "Just What am I looking For?" The chart below moves left to right from menstruation through a typical female cycle. The views shown approximate examples of what may be seen at various times during the fertility cycle through the 58x power lens. Actual views may vary depending on slide and sample preparation, day chosen for testing, lighting and other factors. However these different view examples should prove useful in understanding what you are looking for in the way of changes happening prior to, and during ovulation, the most fertile period for women.

Least Fertile Not Fertile Fertile-Most Fertile Not Fertile
3-7 Days
Days 0-3
Days 4-6 Days 7-9
Days 11-14

Important Information

  • The Slide must be cleaned between each use to avoid contamination on the sample.

  • The saliva sample, obtained by licking the slide once, can be affected by smoking, alcohol or food consumption, therefore it is recommended to abstain from these substances for at least two (2) hours prior to testing.

  • If it is not possible to obtain a spontaneous, clear saliva sample, cervical mucus may be substituted. Cervical mucus will also indicate the "fern structures" during the fertile period.

  • The pocket microscope is designed for everyday use and does not require special care other than cleaning of the slide and lens. We recommend you use an enzymatic contact lens cleaner as this will dissolve any protein buildup on the slide and is not as harsh as alcohol. The batteries for the microscope light are standard watch type and can be replaced.


The OvuTest "Fertile Focus" Saliva Fertility Microscope is boxed with complete use instructions. See the OvuTest™ "Fertile Focus" FAQ

Description Packaging Sale Unit Retail Cost  

OvuTest™ "Fertile Focus" Saliva Fertility OPT Microscope


One (1) Unit




Three (3) Units




Six (6) Units




Twelve (12) Units




Twenty Four (24) Units



*If the order buttons are absent or inoperable, please use the pricing overview page to order.

*Important Note: The OvuTest Saliva Microscope does not predict ovulation but rather can be used as an effective aid in the detection of the fertility period (ovulation) during the female menstrual cycle through identification of increased system electrolytes normally preceding ovulation.  No warranties or claims are made nor responsibility accepted for interpretation of test results and resultant outcomes.

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