GHRT-89HK | Human Ghrelin (TOTAL) RIA

125 tubes  
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      Key Spec Table

      Analytes Available Species Reactivity Key Applications Detection Methods
      GhrelinHRIARadioactive, 125I
      Catalogue Number GHRT-89HK
      Description Human Ghrelin (TOTAL) RIA
      Background Information Ghrelin is a recently discovered hormone is secreted primarily by the stomach in response to glucose administration or CNS signals.
      Product Information
      Detection method Radioactive 125I
      • ED80 = 395 ± 88 pg/mL
      • ED20 = 2015 ± 382 pg/mL
      • ED50 = 895 ± 177 pg/mL
      Precision, %
      • Inter-assay: 14.7–17.8
      • Intra-assay: 3.3–10.0
      Application This radioimmunoassay (RIA) measures & quantifies Ghrelin for use in Metabolism & Endocrine & Neuroscience research.
      Key Applications
      • Radioimmunoassay
      Application Notes Two-day disequilibrium assay at 4°C. Sample volume: < 100 μL Plasma (collected on ice) recommended
      Biological Information
      Species Reactivity
      • Human
      Analytes Available
      • Ghrelin
      Entrez Gene Number
      Entrez Gene Summary Ghrelin is an endogenous ligand for the growth hormone secretagogue receptor (GHSR; MIM 601898) and is involved in regulating growth hormone (GH; MIM 139250) release. Ghrelin is derived from a preprohormone called preproghrelin, which also generates a second peptide called obestatin. Obestatin is an endogenous ligand for the orphan G protein-coupled receptor GPR39 (MIM 602886) and is involved in satiety and decreased food intake.[supplied by OMIM]
      Gene Symbol
      • GHRL
      • obestatin
      • MTLRP
      • ghrelin
      Label 125I-Human Ghrelin
      UniProt Number
      UniProt Summary FUNCTION: SwissProt: Q9UBU3 # Obestatin may be the ligand for GPR39. May have an appetite-reducing effect resulting in decreased food intake. May reduce gastric emptying activity and jejunal motility (By similarity).
      SIZE: 117 amino acids; 12911 Da
      TISSUE SPECIFICITY: Highest level in stomach. All forms are found in serum as well. Other tissues compensate for the loss of ghrelin synthesis in the stomach following gastrectomy.
      PTM: O-octanoylation or O-decanoylation is essential for ghrelin activity. The O-decanoylated forms Ghrelin-27-C10 and Ghrelin-28- C10 differ in the length of the carbon backbone of the carboxylic acid bound to Ser-26. A small fraction of ghrelin, ghrelin-28- C10:1, may be modified with a singly unsaturated carboxylic acid. & Amidation of Leu-98 is essential for obestatin activity (By similarity).
      SIMILARITY: SwissProt: Q9UBU3 ## Belongs to the motilin family.
      • 90–96%
      Physicochemical Information
      • 100–10,000 pg/mL
      Linearity of Dilution 99–146%
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Usage Statement
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Packaging Information
      Material Size 125 tubes
      Transport Information
      Supplemental Information



      GHRELIN (Total) RIA KIT - 125 TUBES (Cat. # GHRT-89HK)



      Material Safety Data Sheet (MSDS)  

      References | 26 Available | See All References

      Reference overviewPub Med ID
      Acute differential effects of milk-derived dietary proteins on postprandial lipaemia in obese non-diabetic subjects.
      Holmer-Jensen J, Hartvigsen ML, Mortensen LS, Astrup A, de Vrese M, Holst JJ, Thomsen C, Hermansen K
      European journal of clinical nutrition 2011

      Show Abstract
      Reverse Feeding Suppresses the Activity of the GH Axis in Rats and Induces a Preobesogenic State.
      Glad CA, Kitchen EE, Russ GC, Harris SM, Davies JS, Gevers EF, Gabrielsson BG, Wells T
      Endocrinology 152 869-82. Epub 2011 Jan 5. 2011

      Show Abstract
      Cereal type and heat processing of the cereal affect nutrient digestibility and dynamics of serum insulin and ghrelin in weanling pigs.
      Menoyo D, Serrano MP, Barrios V, Valencia DG, Lázaro R, Argente J, Mateos GG
      Journal of animal science 2011

      Show Abstract
      Metabolic maturity at birth and neonate lamb survival: Association among maternal factors, litter size, lamb birth weight, and plasma metabolic and endocrine factors on survival and behavior.
      DR Miller, D Blache, RB Jackson, EF Downie, JR Roche
      Journal of animal science 88 581-93 2010

      Show Abstract
      Comparison of Competitive Radioimmunoassays and Two-Site Sandwich Assays for the Measurement and Interpretation of Plasma Ghrelin Levels.
      Prudom C, Liu J, Patrie J, Gaylinn BD, Foster-Schubert KE, Cummings DE, Thorner MO, Geysen HM
      The Journal of clinical endocrinology and metabolism 2010

      Show Abstract
      Effects of fat supplementation on postprandial GIP, GLP-1, ghrelin and IGFBP-1 levels: a pilot study on adolescents with type 1 diabetes.
      M Lodefalk,C Carlsson-Skwirut,J J Holst,J Aman,P Bang
      Hormone research in pædiatrics 73 2010

      Show Abstract
      Basal Plasma Levels of Insulin, Leptin, Ghrelin, and Amylin Do Not Signal Adiposity in Rats Recovering from Forced Overweight.
      Gloy VL, Lutz TA, Langhans W, Geary N, Hillebrand JJ
      Endocrinology 2010

      Show Abstract
      Ghrelin, paraoxonase and arylesterase levels in depressive patients before and after citalopram treatment.
      Abdullah Onder Barim, Suleyman Aydin, Ramis Colak, Ersel Dag, Omer Deniz, Ibrahim Sahin
      Clinical biochemistry 42 1076-81 2009

      Show Abstract
      Appetite responds to changes in meal content, whereas ghrelin, leptin, and insulin track changes in energy availability.
      Borer, Katarina T, et al.
      J. Clin. Endocrinol. Metab., 94: 2290-8 (2009) 2009

      Show Abstract
      Metabolic maturity at birth and neonate lamb survival and growth: the effects of maternal low-dose dexamethasone treatment.
      D R Miller, R B Jackson, D Blache, J R Roche
      Journal of animal science 87 3167-78 2009

      Show Abstract


      ELISAs, RIAs & GyroMark HT Assays
      Immunoassay & Multiplex Kits: Analyte Quarterly, Volume 1, 2015

      Technical Info

      Quality Control Ranges: TOTAL GHRELIN RIA KIT

      Data Sheet

      Full Service Custom-built Assays


      What is the difference between active and total Ghrelin RIAs/ELISAs? The active assays require the intact octanoyl group on the 3rd AA which means samples need to be acidified and treated with aprotinin, while total/desacyl assays can read the truncated form without the octanoyl modification.