My original fibroscan said 19.1, then 6 mo later 9.9, then a yr later today, 6.7. all the tests have 100% accuracy, and at least 10 perfect hits. I had ONE biospy in 2001 that said I was stage 2, grade 2, (they cant bx now because I have my bp way too low), and i have 3 liver ultrasounds that say heterogenous appearance which in the comments section states that I have widespread parenchymal disease. So, the hepatologist said today that since I have had a durable SVR since 2004, that my liver might be improving, even tho I have outwards signs of cirrhosis. Palmar erthyma (sp), numerous spider nevi, terri's nails, etc..I have yet to understand any of this..I'll just go by how I feel.. mostly tired, and mostly sick, most of the time, tho I do have good days as well.. keep on everyone!
Both those tests are better able to predict changes in fibrosis once a baseline is established, than they are at predicting the level of fibrosis on the first test. They work best when used over a long period of time while testing regularly.
A biopsy is the most accurate test to establish the exact level of fibrosis and even those can be off, since they sample a small tissue area compared to the entire liver. The liver is not homogenous and different areas can have different levels of fibrosis.
If the fibroscan was 6.7 ..then yes that is consistent with F1 fibrosis and if your fibrotest showed F3 fibrosis..then one of the tests or possibly both of them are incorrect.
FS is fairly good at predicting late stage damage(cirrhosis) but the error rate is approx.25% in middle stage damage.
Fibrotest .. is better at predicting at either end of damage and also has errors at middle stages.
I would ask for both to be re-run ..given the wide discrepancy between the two...or possibly ask to have a biopsy done.
Good luck...
Will
If I mixed it up and my fibroscan was 6.7 it does fit in with what I was told and shown on the colour chart but then why would my fibrotest show F3? I realize these are not 100% accurate tests but they seem far apart on stage.
Fibroscan measures liver stiffness and is gauged in Kilopascals or Kps .. Do you have the original FS report ? Nurse might have been confused or you may have heard wrong ...It might say something like 6.7 Kps ... which would be good F1 ...
a .67 .. don't believe a reading that low is possible with FS
Fibrotest or Fibrosure is a blood test ... I personally would be more inclined to trust the Fibroscan as our blood counts move around with this virus ...
My 1 cent only
It does use a .0 system .. it sounds like some data might have been mixed up ..
http://www.biopredictive.com/intl/physician/fibrotest-for-hcv/view?set_language=en