APS patients and INR (finger stick) machines

[Warrick]

Well up until 20 minutes ago I'd never heard of antiphospholipid antibody syndrome (APLA syndrome), it's a blood clotting disorder which requires many to be on warfarin.

INRs from POC machines (such as coagucheks) are unreliable in about 1/3rd of patients with the clotting disorder. http://www.apsfa.org/fingerstick.htm

And it seems suffers are more prone to valvular heart disease
https://www.ncbi.nlm.nih.gov/pubmed/23456852

https://academic.oup.com/ejcts/article/37/1/154/364046

Found this interesting because I can't recall anyone here being a sufferer, and it hi-lights a limitation of POC machines I wasn't aware of for some warfarin users.

 

[pellicle]

Hi
Yes, there are one or two other disorders which render coaguchek (and indeed some lab methods) useless.

Makes you more grateful that you are one of the majority in a minority group dunnit..

 

[Jamey T]

I have wondered if I don't have something going on with my blood that makes my Coagucheck give readings that are high.

But then, why was the InRatio so close to labs blood draw.

I am thinking I am going to try a different meter.

 

[pellicle]

I have wondered if I don't have something going on with my blood that makes my Coagucheck give readings that are high.

its possible.

how high ... can you provide a few data points? What sort of lab draw?