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Procedures & Tests Beginning With G
7 procedures and tests in this guide begin with the letter G. Every name links to a plain-language page covering what the procedure is, how to prepare, what happens during it, and what recovery involves.
A B C D E F G H I J K L M N O P R S T U V W X
| Procedure / test | Category | What it is |
|---|---|---|
| Gallbladder removal (cholecystectomy) | General Surgery | Cholecystectomy is removal of the gallbladder, usually by keyhole (laparoscopic) surgery through four small cuts. The gallbladder stores bile; after removal, bile flows directly from the liver into the bowel. |
| Ganglion excision | Bones, Joints & Spine | A ganglion is a benign fluid-filled swelling arising from a joint or tendon sheath, most often on the back of the wrist. Excision removes the ganglion together with its stalk to reduce recurrence. |
| Gastric band adjustments and other minor procedures | Minor Procedures & Pain | This page covers minor procedures in bariatric follow-up: gastric band adjustments (adding or removing saline through the port under the skin to tighten or loosen an adjustable gastric band), which are the routine follow-up of band surgery. |
| Gastric emptying study | Digestive | A gastric emptying study is a nuclear medicine scan that tracks how quickly a meal leaves the stomach. You eat a small meal containing a tiny amount of radioactive tracer, and a camera takes pictures over several hours. |
| Gastroscopy (upper GI endoscopy) | Endoscopy | A gastroscopy (also called an upper GI endoscopy or OGD) passes a thin, flexible camera through the mouth to examine the gullet, stomach and the first part of the small bowel. |
| Genetic testing (diagnostic) | Biopsies & Lab Tests | Diagnostic genetic testing analyses DNA — usually from a blood or saliva sample — to look for inherited variants that explain a condition or predict risk: examples include BRCA1/2 for hereditary breast and ovarian cancer, Lynch syndrome genes, cystic fibrosis, Huntington's disease and many rarer conditions. |
| Glaucoma laser (SLT / iridotomy) | Eyes | Two common glaucoma lasers: selective laser trabeculoplasty (SLT) applies gentle laser pulses to the eye's drainage tissue to improve fluid outflow and lower pressure in open-angle glaucoma. Laser peripheral iridotomy makes a tiny hole in the iris to prevent or treat angle-closure glaucoma. |
Please note: This page is educational information about a medical procedure or test. It does not replace the instructions of your own care team, who know your situation and whose preparation, fasting and medication advice you should follow if it differs from anything here. If you have symptoms that worry you, or an appointment you do not understand, contact your clinical team.