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Metabolic Disease

C-Peptide of Insulin

Analyte: C-Peptide of Insulin
Specimen Type: Serum, EDTA Plasma, P-800 Plasma (or equivalent)
Biological or Clinical Significance: C-peptide of insulin is a metabolic by-product produced during the activation of insulin. Insulin is a polypeptide hormone originating in the beta cells of the pancreas and serving as a principal regulator for the storage and production of carbohydrates. It is synthesized as part of a larger inactive protein, proinsulin. A rise in plasma glucose…

Complement Factor D (Adipsin)

Analyte: Complement Factor D
Specimen Type: Serum, Inquire for addtional option(s)
Biological or Clinical Significance: The complement system comprises approximately 30 circulating plasma proteins, as well as cell-surface receptors, that function as part of the innate and adaptive immune system to eliminate pathogens.  The system is organized into multiple proteolytic cascades where proteases exist as inactive zymogens and are activated via the action of an upstream active protease.  Three pathways…

DPPIV Activity

Analyte: DPPIV Activity
Specimen Type: EDTA Plasma
Biological or Clinical Significance: DPP-IV (dipeptidyl peptidase-4, DPP-IV, CD26) plays a major role in glucose metabolism.   It is a member of the class or proteases called prolyl peptidases, which cleave proteins after proline residues.  It is responsible for the degradation of incretins such as GLP-1.  Furthermore, it appears to work as a suppressor in the development of cancer and…

Glucagon - ELISA

Analyte: Glucagon
Specimen Type: Plasma from BD P700 or P800, EDTA Plasma with preservatives; contact nexelis for collection instructions
Biological or Clinical Significance: Glucagon is a 29 amino acid peptide produced by the pancreas that plays a critical role in glucose metabolism and homeostasis. The glucagon precursor mRNA is expressed by alpha cells (a-cells) of the pancreas, L cells of the intestine, and in the brain. Only the pancreatic a-cells express the prohormone convertase PC2, also called PCSK2,…

Glucose, Urine

Analyte: Glucose
Specimen Type: Urine
Biological or Clinical Significance: Glucose is the major carbohydrate present in the peripheral blood.  Oxidation of glucose is the major source of cellular energy in the body.  Glucose derived from dietary sources is converted to glycogen for storage in the liver and muscle or to fatty acids for storage in adipose tissue. The most frequent cause of hyperglycemia is…
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