welche blutwerte bei müdigkeit und erschöpfung — can a microbiome test help?

When experiencing fatigue and exhaustion, standard blood tests are the first line of investigation. Key markers include iron, ferritin, vitamin B12, folate, vitamin D, thyroid hormones (TSH, fT3, fT4), inflammatory markers (CRP), and HbA1c. A microbiome test (stool analysis) is not a routine diagnostic tool for fatigue. While there is emerging research linking gut bacteria to energy metabolism, the evidence is mostly mechanistic and not yet sufficient to establish causality or guide treatment. Current clinical guidelines do not recommend microbiome testing for fatigue. The utility is often overstated by commercial providers. A microbiome test may provide additional context about dysbiosis, but it cannot replace a thorough blood workup. The evidence for direct clinical application is weak to mixed. Therefore, the answer to 'can a microbiome test help?' is: possibly as a complementary tool, but not as a primary diagnostic for fatigue.