Education is the KEY
It appears as though certain groups are pushing people to get the machines and even promoting the purchase of the machines (as if they were getting a kick back from them?). And then there are other groups who are adamantly against the machines.
These machines have put into their literature that there are "limitations" when it comes to APS patients. They mention those who have a positive Lupus Anticoagulant, however, listed here we have a personal story from someone who has a negative LA and actually has Seronegative APS or SNAPS and she had problems with her home machine.
Did you know that there can be other factors that can also affect the readings? Anemia is one thing, and also Lovenox/Heparin use within 24 hours of the reading can cause it to be off.
If you needed a carseat for your child and there were only two to choose from…would you buy the one that had listed certain "limitations" or would you go for the one that was deemed "safe"? Maybe not a good comparison, but the warnings are in black and white. Who can question that?
If you get your INR from your home machine and have to "add or subtract a point" because you KNOW it's off…what does that tell you?? What if it's off by 2 or 3 points and you only added 1? So then a 2.2 reading…+ 1 pt would be 3.2…but it's off 2, so your TRUE INR is actually 1.2??? Do you know what can happen to some people when their INR drops that low?? Clots…Strokes…PE's…
Is the convenience of having the machine at home worth risking your life over?
I am urging you to educate yourself. Call the companies, ask the questions. If your doctor is pushing this machine, do they get money for each machine sold? Same with an organization that may be pushing it…are THEY getting money for each machine sold? Talk to people who use the machines. Ask them how often they do comparisons with a vein draw. Read the stories of people who have had problems. 1 in 10 is one too many if you ask me.
Educate yourself. Make an educated decision, not a knee jerk, convenience decision. The "limitations" are in black and white. If you have APS…YOU are the limitation.
This is also referring to the finger stick machines at the clinics or dr offices. One of the stories was from a dr's machine and not a home machine.
It's your life, your decision. Is the convenience of not going to the clinic worth your health and possibly your life? How convenient will it be for yourself, your family, friends and loved ones if you're dead?
Lyn's Experience
How about the finger stick in the hospital lab? I like it because I know my INR right away. But if the elbow stick is more accurate.... The only time I had both a finger stick and the elbow stick, the numbers were the same.
I had the chance to get a little evidence on my own. I had a blood draw from the doctor's, and asked them to do a pt/inr, then I went straight to the hospital where I have a standing order. and got a finger stick. the finger stick was 1.9, the venopuncture was 2.3. Venopuncture from now on.
I'm going to tell the people at my hospital that APS people shouldn't get fingersticks. I think we all should tell our doctors, phlebotomists, vampire people, etc. that venous is the only way for us APS folks. They don't necessarily read the literature, and APS is such a new diagnosis that they haven't learned this in school, and it hasen't hit the continuing medical education courses. So we 'special ones' surround us with people who do know that. lrb
http://www.apsforum.com/forum25/10469.html
(registration required)
Bec's Experience with INRatio.
I go to Labcorp for the venous draws, and I mentioned how the finger stick was so inaccurate. The phlebotomist said she has several people who come in for venous draws because it is inaccurate for them as well; she said that is one of the reasons why Labcorp has not switched over.
I speak from personal experience, and the INRatio machine is not accurate for people with APS. After the huge discrepancy with my result, my dr called the company and the company admitted that it is not accurate for people with APS. If you do a search on their website (hemesense.com), you can find the warning.
http://www.apsforum.com/forum25/10469.html
(registration required)
Jeanette's Experience
manufactured by Roche and I purchased it via Tapestry Medical in Livermore,
California.
I was so excited to finally convince my doctor to give me a prescription for
the device. Even though I had to pay for it myself (it cost $2300 and my
health plan would not pay for it), I thought it would help me to regulate my
INR.
My doctor suggested that I continue getting vein draws at the lab while I'm
also testing at home for a while to verify the reliability of the machine.
The first time I tested last week the difference between the lab draw and
the self test (conducted within 30 minutes of each other) was only 0.3 so I
was highly encouraged.
Unfortunately, a week later and the second time I tested, the CoguChek said
my INR was 4.3 but the vein draw said only 3.5. For me this is a
significant difference because at 4.3 my meds are reduced but at 3.5 I stay
at the same dosages until the next test.
I called Roche and expressed my concerns about the reliabilty of the
machine. They told me that at higher INRs (above 4.0) the machine becomes
less reliable. They also told me that the machine doesn't work very well
for people with Antiphospholipid Antibodies because these same antibodies
are on the test strips! She said that especially when someone with APS is
having a flare up the machine may not work well due to the high level of
antibodies in the blood.
I feel like I wasted $2300 and I think the company should have told me that
the machine doesn't work well for people with APS. I'm frustrated with
myself for making this purchase without doing more research.
I'm sharing this with all of you in hopes that I'll be able to prevent
someone else from wasting their hard-earned money.
By the way, I'm asking the company for a full refund and if they refuse I am
going to file a claim in Small Claims Court.
- Jeanette in California
Originally posted on APLSUK (registration required) http://health.groups.yahoo.com/group/APLSUK/message/49519
Todd Had a TIA Using a Finger Stick Machine in his Lab at the Hospital
Or for those people who are thinking about getting one...
PERFECT EXAMPLE of how they just DO NOT work with APS patients....
Todd's been getting LAB INR MACHINE draws for months. We DID comparisons...a few in a row...all was fine...they matched, I was ok...a bit skeptical, but ok with them.
Well, Todd hasn't been feeling well.
A little high for him (his range is 3-3.5) but still ok...didn't explain why he felt like dog doo...but ok, stranger things have happened, this is APS fgs.
Anyhow...he starts getting right side numbness WITH the Migraine that he had.
Goes into the ER...
Well folks...they did a VEIN draw...Guess what his INR was???? 1.5!!!!
ONE POINT FIVE????? omg
That is a HUGE difference...HUGE!!!!!
So he had a TIA everyone.
I'll tell you this. I am going to be on the phone
He hasn't had a TIA since APRIL!!!
So, please anyone...tell me again WHY you want a machine?
Here's a thread to read also... http://www.apsforum.com/forum25/6543.html
(registration required)
You're putting your life into a machine that is KNOWN to be wrong with APS patients...think TWICE...THREE times...FOUR times and Just say NO!
Original Post: http://www.apsforum.com/forum25/6943.html (registration required)
And in his own words:
Here is the Jist of the ordeal I went through. I was feeling tingiling and numbness on my right side and a migraine the day before i went into the clinic just so you know. I went to have my blood drawn at the aticoagulation clinic yesterday. And my inr was a 3.6 from a finger prick.
Tina's Experience with Home INR Machines.
Brand of Machine: Roche CoaguChek S™
Diagnosis: SNAPS
Experience: After much convincing from other APS patients to get this particular machine, I got it. My insurance company refused to pay for it – and since I was told it was basically the next best thing to sliced bread – I paid for it out of my own money….close to $2000USD.
I did many comparisons with the machine before I and my doctor would accept the machine’s numbers. Things were working fine. The periodic comparisons were fine. Almost a year went by with no real problems or at least nothing that caught my attention. However, it was during that time, others who had problems with this machine came to me and gave me in-house documents regarding this particular machine. I was never told that this machine has a standard of deviation of 20% +/-. I also found out this particular machine has problems with APS patients.
All the sudden I started having problems. My INR was not matching my symptoms. Well, both my doctor and I assumed my machine was reading right and we would correct the dose. We played this game for a few months. I suspected a problem but would check family members who aren’t on Coumadin® and their INR read right. The controls were fine. It wasn’t until I had another full blown TIA that I realized something was seriously wrong - only this time my machine read 7.0. I checked it again, 7.8. I thought this couldn’t be right; my INR was 2.6 the day before. I checked it again, 7.2. Ran all the controls again – both liquid and electronic. Those all read fine. Of course, I got freaked and thought this was a bleed. Went to the ER and my INR was really 4.8. Still having the TIA but that machine was off, really off. I called the company. They said their machine was fine if the controls were fine.
We thought that was a fluke. I checked my INR in a few days after an adjustment down. I got a reading of 7.8. I know that wasn’t right. Hospital said it was 3.5. I ordered a new box of strips, more liquid controls and started comparing batch to batch to INR. The batches were matching up but none of it to the lab. The lab readings were how I was feeling. It got me thinking how long was this machine off a few months ago when we assumed it was right. I was very lucky I didn’t have a full blown stroke because of the machine. It was at that point I stopped using the machine. I just couldn’t trust it any longer.
After about 6 months, I got my INR back on track by going to the lab once a week. I thought I would spend the money and get a new box of strips since the others were expired and see if this expensive machine would work for me again. I started again doing comparisons. The machine was still off. I am done using it. I will deal with the hassle of going to the lab. At least I know those INR’s are correct. I have smashed the machine into a million peices and really disgusted at what a waste of money it was. I could have donated that money to the APS Foundation of America, Inc or something. Next time I will do my own research before believing word of mouth, promotion from a group and taking everyone’s experiences into consideration. I encourage you to do the same and make an informed decision. This is your life and it could be your death that these machines could cause.
Since Roche doesn't like their information on line. I will put it on line for them - at least I can say they were willing to provide the information that was asked for them. (Thanks!) These are the information sheets from the company talking about their standard of deviation and that they warn the APS patients of use of the machine.
ProTime, the makers of the professional model Hemachron, Jr. which also has problems reading accurate with APS patients. I know the issues with the Hemachron, Jr were reported to the company and the FDA as an adverse event.
The rest of the companies have their information readily accessible. Thank you for keeping it real and not hiding the information!
Happy
On a side note, I have been hearing good things about the CoaguChek XS, well from 2 people - that have APS but their disclaimer is quite clear. Buyer Beware!
Reasons
If you have had a negative (or positive) experience with a home INR testing machine and you'd like to share your story, please email me at apsno2homeinr@gmail.com and tell me your story. I will post it here to share with others.
Thanks for reading.
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Supporting Links
- *INR Monitoring in Patients with Antiphospholipid Antibodies with Finger Stick INR Machines.
- All Links Taken From This Page
- CoaguChek & CoaguChek S Strip Insert
- CoaguChekXS Strip Insert
- Hemochron Jr. Package Insert
- Home INR Machines and Antiphospholipid Antibodies
- INRatio by Hemosense
- INRatio Monitor and Interfering Substances
- MAUDE Adverse Event Report 1
- MAUDE Adverse Event Report 2
- MAUDE Adverse Event Report 3
- Patient Variables in PT/INR Testing with INRatio
- Point-of-care testing of the international normalized ratio in patients with antiphospholipid antibodies.
- ProTime Microcoagulation System Package Insert
- Questions and Answers: For Use with CoaguChek® Test Strip Urgent Medical Device Correction (UMDC) 06-266 and Urgent Medical Device Recall (UMDR) 06-267
- Thoratec Receives FDA Warning Letter, Plans Recall
- Validity of Criteria Used to Evaluate Fingerstick Devices That Assess International Normalized Ratio
- education (15)
- my story (1)
- not APS (1)
- not my words (15)
- opinion (14)
- personal experience (15)
- testimony (11)
Who am I?
- Finger Stick Machine Education
- My goal is to educate APS patients on long term coumadin or warfarin about the possible dangers of using, and relying on Home (finger stick) INR machines to test their INR. Nothing more, nothing less. **I am not affiliated with any APS group, but a member of many. I am just trying to educate people about these machines.**
And according to Google's policies, "information that is already available elsewhere on the Internet or in public records is not considered to be private or confidential under our policies."
My testimonies and sources are all sited.