The Bile Salt And Pigments test is a simple, non-invasive urine test that provides a critical, early-warning sign for your liver and gallbladder health. Normally, these substances are processed by your liver and are not found in urine. Their presence is a key indicator of obstructive jaundice, hepatitis, or a blockage in your bile ducts, often appearing before skin yellowing is severe. This simple urine sample provides a fast, qualitative answer. It’s a foundational, vital check that gives your doctor immediate, actionable insight into a potential liver or gallbladder issue.