Customer Reviews

Witness Relaxin Pregnancy Test Kit 5ct

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Witness Relaxin Pregnancy Test Kit 5ctThis is a fabulous kit that does require a BLOOD sample. You can draw it yourself or have it drawn at your Vet, SPIN IT DOWN to get the plasma (the clear liquid at the top) and the two drops that the Relaxin kit requires. It is simple and easy to use if you have the ability to draw your own blood and a centrifuge at home (get one on Ebay cheap!). Your Vet should draw and spin down the blood for you for very little money. The kit has FIVE tests included, and the price is about the same as ONE test at the Vet. Be sure the blood is put in an EDTA or heparnized tube, then separated if your Vet does it for you. He will just put the plasma in a new tube and for $10.00 for the blood draw, you can do the rest of the test yourself.

I researched this product and it's reviews before purchase. I initial used this test on my bulldog at 25 days from last breeding with a negative result. I waited a week(as manufacture recommends) and re-tested with still a negative result. By the 35th day from breeding she was beginning to show signs of pregnancy and after an ultra-sound was confirmed pregnant (by visual and heartbeats). All three tests was preformed by my vet at $15.00 per blood drawl/spin and $35.00 for the ultra-sound.

What you should know before purchasing/using this test:
The amount of relaxin (serum relaxin level) being produced at the time of the tests depends on the breed, the size of the breed, the size of the litter, LH(luteinizing hormone) surge and when the test is preformed.

For example: If the litter is small there may not be enough relaxin being produced to react with the test. The same would be true if it is a small breed or preformed to early.

I now believe the best option for my female bulldogs in the future will be an ultra-sound as recommended by my vet.

One note pre review: you have to know how to do a blood draw and spin it down to make serum for this test. If you can't do that - go to your vet!!!

Very clear instructions - No false positives with this test - Very easy to use. 2 drops serum in clearly marked well/2 drops buffer solution. Results in 10 mins. Kit contains 5 test so if you wont need that many you can either share with a breeder or, just go to your vet. For those of us with the ability to do blood draws and can use the test in a year or so - a very very good product with accurate results and a money saver. Recommend !

I have used this product for years. It has always been a very reliable test for detecting canine pregnancy.

I have been using this test for about a year now and have gotten a positive result as early as 26 days after the first breeding. I have gotten false negatives, but never a false positive. It is so much cheaper for me than doing an ultrasound.

I am able to draw my own blood and spin it, so I do them right at home.

This was a lot of fun to use. My vet's office had never used it before and they were all watching it change colors. The instructions are explicit and the results are easy to differentiate between negative and positive. You do have to have the blood drawn and processed at the vet's office, but they only charged me for the blood draw. This is totally safe and much preferred over having the vet palpate my bitch for fear of harming the fetuses. Since I have multiple bitches, buying a kit of five was fine, but since it has a short viability, you might not be able to use all five within a year if you breed less or don't have anyone to share it with you. Since your bitch needs to be about 28 days along, it will help you know the timing of conception if she allows breeding longer than normal. I will definitely buy another set as soon as this one runs out!

This is an excellent product, have used it in the past. I have read on some of the breeder forums that this product never has a false positive and is above 90% accurate.

When you think of trying to determine if a bitch is pregnant, or not, you may think of the easy, widely-advertised human test for prgesterone. That works in people, because progesterone levels drop sharply if pregnancy does not occur. Unfortuantely, progesterone is not an indicator of pregnancy in dogs. Whether a bitch is pregnant or not, her progesterone level remains high for weeks.

The Witness test relies on detecting Relaxin, a hormone secreted by developing placentas. The test may detect pregnancy as early as 21 days post-implantation, but early results may be false negatives (she's pregnant but not enough Relaxin is secreted to be detected). The test becomes more and more reliable up to 30 days post-implantation, when it is said to detect 100% of pregnancies.

My own experience with a Labrador retriever bitch is that her first test was negative 25 days after artificial insemination. I could not know when implantation occurred, so this test was probably too early. At 30 days post-AI, her pregnancy was detected. I am guessing this date may have been 22-25 days post-implantation.

For breeders who use AI, it's very helpful to know if a litter is expected. For pet owners whose girls are accidently bred, it may be useful to know if she will be having puppies.

The test kit costs about $100 and includes 5 pregnancy tests.

This test is very easy to do providing that you can draw blood. I have used the test twice in the last few weeks. Much cheaper than going to the vet. It has already paid for its self and I have 3 more test left.

when i decided to get it, it was written : use 2 blood drops !
i thought its that easy !
when i got it and after i read the info i got a bad surprise!
do not use hall blood use only plasma !
i don't have a lab in my house!!
also i bought it while these tests are available in my veterinary but i wanted to save money!
to remove plasma from blood U need to fill about two blood test glass and to put in a device for few minutes and of course pay money! :(
it wasn't easy to take the simple, after we toke it the test was negative

it works nice and good
but not for home users!
if i knew am going to the veterinary any way it won't buy it

the thing that make me really unhappy was that the expiring date after one year while it contain 5 teat and i haven't see yes a bitch got pregnant 5 times in 1 year ! This from the seller

am not very happy withe this experience

but the good thing that the test is very fast and gives a current indications