Medical abbreviations and acronyms (G)

This article contains a list of commonly used medical abbreviations and acronyms that start with the letter Gand may be encountered in medicine and radiology (please keep both the main list and any sublists in alphabetic order).

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• G

  • gauge

  • gauss (cgs unit of magnetic flux density)

  • giga (SI prefix for 10⁹)

  • glycine (single letter amino acid code)

  • gramme (gram is the preferred modern usage)

  • guanine (DNA nucleotide)

• GA

  • gastric analysis

  • general anaesthesia

  • gestational age

• Ga: gallium

• GABA: gamma-aminobutyric acid

• GAD: generalised anxiety disorder

• Gad: gadolinium

• GAE: granulomatous amoebic encephalitis

• GAG: glycosaminoglycan

• GAMP: general anaesthesia, manipulation and plaster

• GAVE: gastric antral vascular ectasia

• GB

  • gallbladder

  • gastric band

  • gigabyte

• GBEF: gallbladder ejection fraction

• GBM

  • glioblastoma (previously glioblastoma multiforme) 

  • glomerular basement membrane

• GBq: gigabecquerel

• GBS

  • group B streptococcus

  • Guillain-Barré syndrome

• GCA: giant cell arteritis

• GCA scale: globalglobal cortical atrophy scale

• GCKD: glomerulocystic kidney disease

• GCS: Glasgow coma scale

• GCT

  • germ cell tumour

  • giant cell tumour

• GCV: great cardiac vein

• GD

  • Gaucher disease

  • gestational diabetes

• Gd: gadolinium

• GDA: gastroduodenal artery

• GDC: gastric duplication cyst

• GDM: gestational diabetes mellitus

• GE

  • General Electric

  • gradient echo

• Ge: germanium

• GORD: gastrooesophageal reflux disease

• GEP-NET: gastroenteropancreatic neuroendocrine tumour

• GFR: glomerular filtration rate

• GG

  • Gastrografin^®

  • ground glass

• GGO: ground glass opacity(ies)

• GGT: gamma-glutamyl transferase

• GH: growth hormone

• GHB: gamma hydroxybutyrate

• GHL: glenohumeral ligament

• GHRH: growth hormone releasing hormone

• GI

  • gastrointestinal

  • glycaemic index

• GIF: graphics interchange format

• GIFT: gamete intrafallopian transfer

• GIST: gastrointestinal stromal tumour

• GIT: gastrointestinal tract

• GLF: ground-level fall

• Gln: glutamine

• Glu: glutamic acid

• GLUT: glucose transporter

• Gly: glycine

• GM: grey matter

• GMC: General Medical Council (UK)

• GNB: Gram-negative bacteria

• GnRH: gonadotropin-releasing hormone

• GOC: glandular odontogenic cyst

• GoF: gain of function

• GOJ: gastro-oesophageal junction

• GOMER: get out of my emergency room

• GOO: gastric outlet obstruction

• GORD: gastro-oesophageal reflux disease

• GP

  • general practice

  • general practitioner

  • globus pallidus

• Gr: Greek

• GRASS: gradient acquisition in steady state

• GRE: gradient echo

• GS

  • gallstone

  • Gilbert syndrome

  • Gram stain

• Gs: gauss

• G&S: group and save

• GSD: gestational sac diameter

• GSV: great saphenous vein

• GSW: gun shot wound

• GTCS: generalised tonic-clonic seizure

• GTDC: gastrointestinal tract duplication cyst

• GTN: glyceryl trinitrate

• GTT

  • drop (Latin: gutta)

  • glucose tolerance test

• GTV: gross target volume

• GU

  • gastric ulcer

  • genitourinary

• GUCH: grown up congenital heart disease

• GUM: genitourinary medicine

• GUT: genitourinary tract

• GVHD: graft versus host disease

• Gy: gray

• GYN: gynaecology (North American abbreviation)