Vitamin B12

Doctor sitting and a table with a patient discussing vitamin B12. Patients hands are folded on the table.

The Vitamin B12 assay is an in vitro test used for the quantitative determination of Vitamin B12 in human serum and plasma. Vitamin B12 is necessary for DNA synthesis, cellular energy production, and red blood cell production. Vitamin B12 deficiency was introduced in 1849 and was originally thought to be fatal. This changed in 1926 when it was discovered that a […]

TSH Assay

Female doctor reviewing notes with her female patient in the exam room.

The TSH (Thyroid Stimulating Hormone) assay is an in vitro test used for the quantitative determination of TSH in human serum and plasma. This hormone regulates weight, body temperature, muscle strength, and a person’s mood. The Thyrotropin-releasing hormone, which is produced by the hypothalamus, controls the production of TSH. The Thyroid Stimulating Hormone is also regulated by the Free T4 (thyroxine) and […]

Hemoglobin A1c

Hand wearing a protective blue glove holding a blood sample.

Glycated or glycosylated hemoglobin is an assay performed in order to diagnose and monitor treatment for type one and type two diabetes. Most commonly referred to as hemoglobin A1c, this assay was initially isolated from other types of hemoglobin in 1958 via the use of a chromatographic column. However, the correlation between diabetes mellitus and […]