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Hi, Dr. Ashori here, please let me review the information and I'll reply shortly.
The test for lupus anticoagulant is only a screening test. Unfortunately, they can be quite often a false positive and further blood testing will need to be done. The easiest thing to do would be to pay for a hematologist office visit in cash which often isn't much more than $100-200. I realize that's not cheap but at least they can get the proper history so that you don't waste your money on incredibly expensive lab testing which can costs upwards of $1,000.
If that doesn't appeal to you then the only other option is to find a virtual medicine app like Doctors on Demand or Remedy or American Well and have one of the physicians there order the right kind of blood tests for you. You can then take the lab order slip to any laboratory after shopping around for the most inexpensive place and that way you'll save money. You can then bring the results here to interpret.
Please let me know what questions you have about this and I can clarify further.