Tests
Vitamin B1 Measurement
The determination of the amount of Vitamin B1 present in a sample.
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Tests
The determination of the amount of Vitamin B1 present in a sample.
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Article
Research record from Se Pu, 2026-03-01. PMID 41814903.
Tests
The main circulating form of vitamin D and the standard measure of vitamin D status.
Indicators
The main circulating vitamin D metabolite — the standard measure of vitamin D status.
Indicators
A small non-essential amino acid in humans, Alanine is one of the most widely used for protein construction and is involved in the metabolism of tryptophan and vitamin pyridoxine. Alanine is an important source of energy for muscles and central nervous system, strengthens the immune system, helps in the metabolism of sugars and organic acids, and displays a cholesterol-reducing effect in animals. (NCI04)
Tests
The determination of the ratio of alpha-tocopherol compared with the total vitamin E in a sample. The measurement may be expressed as a ratio or percentage.
Indicators
The orally bioavailable alpha form of the naturally-occurring fat-soluble vitamin E, with potent antioxidant and cytoprotective activities. Upon administration, alpha-tocopherol neutralizes free radicals, thereby protecting tissues and organs from oxidative damage. Alpha-tocopherol gets incorporated into biological membranes, prevents protein oxidation and inhibits lipid peroxidation, thereby maintaining cell membrane integrity and protecting the cell against damage. In addition, alpha-tocopherol inhibits the activity of protein kinase C (PKC) and PKC-mediated pathways. Alpha-tocopherol also modulates the expression of various genes, plays a key role in neurological function, inhibits platelet aggregation and enhances vasodilation. Compared with other forms of tocopherol, alpha-tocopherol is the most biologically active form and is the form that is preferentially absorbed and retained in the body.
Article
Research record from Methods Protoc, 2026-08-12. PMID 42646512.
Indicators
A natural water-soluble vitamin (Vitamin C). Ascorbic acid is a potent reducing and antioxidant agent that functions in fighting bacterial infections, in detoxifying reactions, and in the formation of collagen in fibrous tissue, teeth, bones, connective tissue, skin, and capillaries. Found in citrus and other fruits, and in vegetables, vitamin C cannot be produced or stored by humans and must be obtained in the diet. (NCI04)
Article
Research record from Int J Mol Sci, 2026-05-14. PMID 42196372.