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The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes).This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).
The abbreviations gt or gtt come from the Latin noun gutta ("drop"). The volume of a drop is not well defined: it depends on the device and technique used to produce the drop, on the strength of the gravitational field, and on the viscosity , density, and the surface tension of the liquid.
Abbreviation Term Description (notes) A.d. As directed bd/bid Twice a day gt One drop gtt drops GSL General sales list Gutt/g Guttae (drops) Meds Medications Nocte/QHS At night Occ Ointment od/QD Once a day otc Over the counter (bought medication) P Pharmacy (drug) POM Prescription-only medicine prn When required q
Abbreviation Meaning Δ: diagnosis; change: ΔΔ: differential diagnosis (the list of possible diagnoses, and the effort to narrow that list) +ve: positive (as in the result of a test) # fracture: #NOF: fracture to the neck of the femur ℞ (R with crossed tail) prescription: Ψ: psychiatry, psychosis: Σ: sigmoidoscopy: x/12: x number of ...
Ichthyosis, brittle hair, intellectual impairment, decreased fertility, and short stature syndrome IBM Inclusion body myositis: IBS Ichthyosis bullosa of Siemens: IBS Irritable bowel syndrome: IC/PBS Interstitial cystitis/painful bladder syndrome: ICF syndrome: Immunodeficiency, centromere instability and facial anomalies syndrome ID Infectious ...
GTT: glucose tolerance test gestational trophoblastic tumor: Gtts: guttae (drops) GU: genitourinary gastric ulcer: GUM: genitourinary medicine (often used more restrictively as alternative to sexually transmitted disease clinic) GvH: graft-versus-host: GvHD, GVHD: graft-versus-host disease: GXT: graded exercise test GYN: gynecology
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").