Tests

Free Complement C5 Measurement

The determination of the amount of free complement C5 present in a sample.

Technology

Cryo-Electron Microscopy

Electron microscopy involving an aqueous suspension of a sample which is applied in an extremely thin film to a grid, frozen in liquid nitrogen and maintained in this state by means of a special mount. The imaging of frozen-hydrated molecules and organelles permits the best possible resolution closest to the living state, free of chemical fixatives or stains.

Product

Elecsys free PSA

Product

Elecsys free βhCG

Product

Elecsys FT3 III, FT3 - free triiodothyronine

Technology

Pyrosequencing

A DNA sequencing method that uses a "sequencing by synthesis" strategy. The strand complementary to a template is synthesized a single base at a time through the sequential addition of individual solutions of each base. Incorporation of a base into the growing strand generates free pyrophosphate that is detected as light, as generated by a luciferase-catalyzed reaction.

Article

[Development and application of amplification-free nucleic acid detection in molecular diagnostics].

Research record from Zhonghua Yu Fang Yi Xue Za Zhi, 2026-05-01. PMID 42128686.

Article

A chromatographic approach to avoid the matrix effect caused by sodium acetate clusters in the liquid chromatography coupled with electrospray ionization mass spectrometry analysis of free fatty acids in human plasma.

Research record from J Chromatogr A, 2026-04-09. PMID 41985367.

Article

A novel multiplex digital PCR assay for simultaneous quantification of androgen receptor amplification, mutations, and splice variants in cell-free nucleic acids from metastatic castration-resistant prostate cancer.

Research record from J Liq Biopsy, 2026-10-06. PMID 42893057.

Article

Accurate Measurement of Serum Free Testosterone Levels via Liquid Chromatography‒Tandem Mass Spectrometry (LC‒MS/MS) has Predictive Value in the Diagnosis of Polycystic Ovary Syndrome and Associated Metabolic Disorders.

Research record from Reprod Sci, 2026-08-04. PMID 42552471.

Indicators

Alpha-Tocopherol

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

Assay-dependent variability in free thyroxine (FT4): differential interference related to immunoassay design in a patient with subclinical hypothyroidism.

Research record from J Clin Pathol, 2026-08-20. PMID 42331602.