Sig code: dosage form

GTT medical abbreviation

GTT has 3 common meanings: "drop", "glucose tolerance test", "drops". The context of the note or order decides which one is meant.

Each meaning matched at least two public references (4 in all for GTT), checked October 23, 2026. The table lists them.

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Meaning	Latin origin	Where used	Checked against
drop	gutta	Prescriptions, Medication labels	NCI Thesaurus, including CDISC SDTM terminology (NCI EVS) NLM SPECIALIST Lexicon abbreviations file (LRABR) FDA Acronyms and Abbreviations Army Regulation 40-66, Appendix B: Authorized Medical Records Abbreviations
glucose tolerance test	None	Prescriptions, Medication labels	NLM SPECIALIST Lexicon abbreviations file (LRABR) FDA Acronyms and Abbreviations Army Regulation 40-66, Appendix B: Authorized Medical Records Abbreviations
drops	None	Prescriptions, Medication labels	NCI Thesaurus, including CDISC SDTM terminology (NCI EVS) FDA Acronyms and Abbreviations Army Regulation 40-66, Appendix B: Authorized Medical Records Abbreviations

Also written: gtt.

Sample label shorthand: "gtt" printed on an eye-drop label.

A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.

What does GTT mean in medical terms?

GTT has 3 common meanings: "drop", "glucose tolerance test", "drops". The context of the note or order decides which one is meant.

What does GTT stand for in Latin?

GTT comes from "gutta", meaning "drop".

Where is GTT used?

GTT shows up in prescriptions and medication labels. Its category here is sig code: dosage form.

Is GTT on the Joint Commission Do Not Use list?

No. GTT is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.