Home Pregnancy Test Sensitivities

Pregnancy TEST Sensitivities

Image: www.americanpregnancy.org Graphics: Pee-On-A-Stick-Freak

 

At the end of every cycle, (one of two things can happen) either the dreaded AF (Aunt Flo) rears her ugly head or you find you’ve missed your Period!

Some of us Chart our cycles every month by taking our BBT (Basal Body Temperature) using a special kind of Thermometer called a, “Basal Body Thermometer.” They are a bit more sensitive, and can record even the slightest body fluctuations. The next thing would be our CM (Cervical Mucus) which goes through different phases throughout the course of our cycle, as well as our CP (Cervical Position).

During the first Part of our cycle, Estrogen is responsible for gearing our bodies up for Ovulation. Once that happens you’ll notice your CM and CP getting less fertile and Progesterone (which is a heat inducing Hormone) keeps our Temperatures higher and elevated until AF shows up. Progesterone is responsible for the second half of our cycle known as the (Luteal Phase). If your Temperatures remain elevated past your ETD (Estimated Testing Day) or the day you’re expecting your Period – chances are you may be Pregnant! Estrogen is responsible for the first Part of our cycle, (Follicular Phase) so it just makes sense that our Temperature will drop within a day or two of AF.

There are all kinds of different Test Sensitivities, and you’ll find it rather easy deciding which one is right for you depending on how far along you may be in your possible Pregnancy. Usually the first day of your missed Period you can expect a reliable result, although some opt to start testing as Early as 8dpo (Days Past Ovulation). A good rule of thumb is if you KNOW you’re testing Early, you may want to rely on a HIGHLY SENSITIVE TEST that’s at least 25 mlU/ml and if you’re far enough along than usually a 40 or 50 mIU/ml should be sufficient.

Here is a List I’ve put together by Name Brand and Sensitivity!

Tests UNDER 25 mIU/ml:

– First Response Digital Gold 18mIU/ml
– First Response Early Result (Quantative Test that will pick up ANY amount of HCG per the manufacturer)

20 mIU/ml Tests:
– AimStep
– Aim Midstream 
– AimStick OTC PBO
– AimStick OTC/Accu Dip
At Home Pregnancy Test
– D Best One Step
Early Pregnancy Test
Save On Tests
– Simplicity
Tests For Less

25 mIU/ml Tests:
– AccuHome
– Answer
– Answer Quick & Simple
– Clearblue Easy (Digital) 35-50 mIU/ml
– Clearblue Easy Earliest Result
– Confirm 1-Step
– CVS Brand (Midstream)
– E.P.T. ( + or – ) Result Window
– Equate ( l l ) 2 line Result Window
– Equate ( + or – ) Result Window
– Fact Plus (Cassette)
– Fact Plus 1-Step (Cassette)

– First Signal One-Step Pregnancy Test (cassette)
– Health Check
– Health Mark
– Insta Test
– Iverness ( + or – ) Result Window
– Life Sign One Step (Midstream)
– New Choice (Dollar Tree Brand – Cassette)
– Smart Strip HCG (Fertilinet)
– Walgreens Brand (Digital)
– Puralin One Step Pregnancy Test
– One Step Be Sure Pregnancy Test

40 mIU/ml Tests:
– E.P.T ( l l ) 2 Line Result Window
– E.P.T ( + or – ) Result Window
– E.P.T Certainty

50 mIU/ml Tests:
– Clearblue Easy
– CVS Brand (Cassette)
– Early Pregnancy Test
– Iverness II
– Dollar Store Tests
– Target Brand
– Rite Aide Brand
– Drug Emporium Brand

100 mIU/ml Tests:
– Fact Plus Pro (Cassette)
– Walgreens Brand (Midstream)

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Can the TEMPERATURE of URINE effect the result of a OPK?

As I was doing a Video Experiment yesterday, it occurred to me that there may be a possibility that the actual Temperature of Urine itself, could possibly effect the outcome of a OPK! As I was looking at the Tests (with the naked eye vs camera) they both yielded positive results BUT the T (Test) Line wasn’t as dark as it normally is on the Test used with CONCENTRATED Urine. I would have expected that with the Test used with DILUTED Urine. Of course going through my emails I actually came across one that had sparked my same interest and theory about THE TEMPERATURE OF URINE! Could that have had en effect on the result?

(Part 1)

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(Part 2)

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Can the CONCENTRATION of Urine effect the opacity of a Test Line on a OPK?!

I’ve had a few inquiries (Yes my fellow TTC’ers please keep the experiment ideas coming!) about whether or not the actual CONCENTRATION of urine, can effect the lightness or darkness of a Test Line? So, (seeing as how I’m not currently Pregnant) I thought, WHY NOT TEST WITH AN OPK? (Ovulation Predictor Kit) – For some odd reason during my last cycle I had an extremely higher level of LH (Luteinizing Hormone) and had tested positive the night before!

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Blue Dye vs Pink Dye OPK

How long Do You Have to hold a HPT or OPK in urine?

So we you’re about to take a HPT (Home Pregnancy Test) or even a OPK (Ovulation Predictor Kit) – usually when you’re reading the instructions that come in the box, there’s a reccomended length of time they specify holding the Dip stick in the urine stream (or same difference if it’s a Midstream Test)! Honestly, I never really gave it much thought. Sometimes whenever I’m making these awesome, fun Videos for you guys, I can get a bit distracted, (say if one of my kiddos starts knocking on the door for example Ha Ha) and it may not be until I actually go back and watch the video that I catch something I hadn’t noticed during filming! When I first got the Equate Brand OPK I tested one with PM urine and being as it was a dreadful Blue Dye Test, I was a bit confused by the results! So maybe 15 mins later I dipped another one (in the SAME urine sample) and held it a few seconds longer. Guess what? The T (Test) line was darker than the C (Control) line! Whereas with the Test before, the 2 Lines were the SAME! Soooooooooo I concluded from that experience that it DOES matter how long you actually hold a Dip stick in the urine and (of course) how CONCENTRATED the urine sample is! I highly recommend holding the dip stick a minimal of 5-10 seconds! Anything less, may yield a much lighter result. Now keep in mind (whether it be a OPK or a HPT) a positive result is a positive result as long as the Tests are taken properly and read within the correct time frame. If you have a High enough concentration of HCG (Human Chorionic Gonadotropin) a HPT will yield a POSITIVE result, much like a OPK will if you have a high enough concentration of LH (Luteinizing Hormone) BUT – the Line opacity can differ! So, I will be conducting more Tests like this in the near future. But for now, I’m using the Blue Dye Tests and I hope you find this helpful! 

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The Difference Between CONCENTRATED Urine and DILUTED Urine

New Choice OPK vs Equate OPK

Positive OPK’s CD35 using a New Brand!

Going on CD35, and 7 days of BLAZING POSITIVES with (First Response – 100m/IU according to consumer studies) The Dollar Tree Brand (New Choice – 25m/IU) I decided to get yet a 3rd Brand! Of course my DH (Darling Husband) went to the wonderful world of Walmart and bought their (Equate – 100m/IU according to consumer studies) Ovulation Midstream Tests. But Yeah, they were the HORRIBLE BLUE DYE TESTS! Eeeeeeek! (Another story for another day!) So I thought I would give them a try……….

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Positive OPK’s CD33 using Day 4 New Choice OPK

Positive OPK’s CD32 using Day 3 New Choice OPK