If I understand the question right...if your liver function tests were abnormal or showed you had another disease that could cause blood clots (like liver cancer) that's one thing.
But if you had one liver test and it showed elevated liver enzymes for example, and then the next test showed up normal - that can happen for a lot of reasons and wouldn't necessarily be related to why you got a DVT.
Your trip to India could easily have been a cause though - especially if you were on a long flight or train or car trip- that can be a huge risk factor. Other risk factors are surgery, family history of clotting and genetic clotting disorders, being overweight, smoking, birth control pills - and sometimes there's no reason found at all.
Sounds like you're on the standard treatment for DVT, and if you scout around the past discussions in this support group, you'll find a lot of answers. Do you know if you had any blood tests to look specifically for genetic causes of your DVT?

I've had abnormal liver levels and a simple virus can cause that. What they usually get concerned about is consistently messed up levels.

Honestly, you may never know why you got the DVT, although it is possible that it was caused by a long car trip or flight during your travels in India.

I've had genetic tests and have been negative for all. Have no family history. My first two clotting episodes were blamed on birth control, but that was not the cause when I got multiple PEs last year. We don't have a cause for the PEs at all ... the docs told me I may have something that we just can't test for yet. I'm find with that. Even if I knew what I "have", I'd still be a warfarin lifer.

I had very bad liver counts when I was hospitalized with DVT the last time. My Hospitalist was very concerned and held off moving me from heparin to Warfarin to keep my liver from having to work too hard.

She gave me the 3rd. degree about my drinking habits and scared me with the possibility of cancer, but it turns out the liver was just in distress because of the DVT in my abdomen. As the clot dissolved my liver counts returned to normal.

My Liver results did show elevated liver enzymes, the consultant did all the genetic blood tests - all came back negative, what the Dr is suggesting now is to repeat the Liver blood test and see if it's still elevated or normal...I also had a Liver scan to see if there were any abnormalities, that came back ok....

So far so good then! Elevated liver enzymes can be caused by a virus or excessive partying (hate to see Charlie Sheen's liver, Oy!) or any number of benign, transient things. I had that show up once when I was applying for insurance, scared the heck out of me. But on the next test all was well.

Sheen's liver is "winning."

LMFAO!

I have agreed with my Dr to have another Blood test just to keep an eye on the results...let's see what happens!