Abaxis (manufacturers of the "Piccolo" systems, which seem to be lab-on-disc based and offer point-of-care operation) are an interesting company to compare to Theranos. They seem to be able to perform small panels of assays (up to 14) on 100 µL samples [1] obtained by venipuncture.[2]

They are valued at $880M, and had ~ $200M revenue and $27M profit in the last financial year.

http://www.abaxis.com/about_us/history.html

[1] http://www.piccoloxpress.com/products/panels/function/

[2] http://www.piccoloxpress.com/wp-content/uploads/2015Revision...