This is a study to see the agreement of blood samples collected through different means and tube types for the HepQuant DuO Test. The HepQuant DuO Test is a blood-based test that involves a drink of a natural compound, cholate, and blood samples at 20 and 60 minutes. The study team is collecting clinical and laboratory data from patients living with chronic liver disease and healthy adult volunteers. The study has up to 2 study visits at an outpatient clinic and can take up to 4 weeks for a participant to complete study. At these visits, participants will undergo a HepQuant DuO test and other standard lab tests. In addition, the study team will ask about a participant's experience with different blood sampling methods.
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Difference in d4-cholate concentrations between RTs by VP (reference method) and the SSTs by VP (primary index method).
Timeframe: From screening to completion of blood collection at Visit 1 is 2 weeks.