We provide a wide variety of analytical standards suitable for mass spectrometry-based metabolomics and biomarker testing applications. These applications range from metabolic profiling and fingerprinting, clinical and diagnostic testing, and target analysis to identifying novel biomarkers of clinical relevance, pharmaceutical research of disease targets, and endocrinology. Our metabolomics and biomarkers analytical standards include endogenous compounds of clinical significance such as DNA/RNA oligos; metabolites of amino acids, lipids, carbohydrates, bile acids and vitamin D; catecholamines and neurotransmitters; and male, female, neonatal, and thyroid hormones.