Investigating Glucose In The Blood

Analytical chemistry has been in the medical lab for decades, and though it is currently an exceedingly elemental methodology in the laboratory nowadays, it had simple beginnings. Reagents were mixed with either entire human blood, or the blood was permitted to clot in a test tube and then centrifuged, permitting the red cells to separate from the serum. The serum was mixed with the specialized reagents and permitted to incubate at body temperature, sometimes in a water bath, until a reaction occurred.

The first chemistry instruments were colorimetric, using color changes in the reaction with a light source passed thru the tube and then sensed by a photomultiplier. The ensuing electric charge was mathematically figured out by a simple computer, giving a result in mg per deciliter of human blood serum.

Glucose meters where the first instruments, together with bilirubinometers. A glucose analyser was an awkward machine, but gave a good estimation of the blood sugar analysis readings in an individual. This result was used by doctors to investigate diabetes and other blood sugar dysfunctions, and to start a regimen of therapy for the suffering patient.

A light source, usually a straightforward light bulb of high power, was used to direct a beam of light thru the sample. The glucose reagent caused a particular colour when mingled with blood serum. In early testing procedures, this was a blue colour. The system used a light-sensitive diode to respond to the varying colours that happened when different levels of glucose sugar were present in the blood serum.

A blank was used before testing, which was comprised of a cuvette, or vial, of only the glucose reagent. The machine recognised what the color was without a reaction, therefore rocketing the accuracy of the reading. Controls made of known levels of blood sugar inside human blood serum, usually pooled, aided in assuring precision of the machine, so analytical blood glucose chemistry was born.

Jessica Wallis is an expert in the sphere of analysis chemistry and writes for countless science related portals including products like rod seal products and dynamic seal devices