Lab

HCT medical abbreviation

HCT means "hematocrit".

On the ISMP List of Error-Prone Abbreviations. ISMP suggests: Write the full drug name.

Each meaning matched at least two public references (5 in all for HCT), checked October 23, 2026. The table lists them.

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What HCT means

Example

Sample lab panel label: "HCT."

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

Related abbreviations

  • HGBhemoglobin
  • CBCcomplete blood count
  • HCTZhydrochlorothiazide
  • RBCred blood cell
  • WBCwhite blood cell
  • A1Chemoglobin A1c

Elsewhere on Rivvi

Questions

What does HCT mean in medical terms?

HCT means "hematocrit".

Where is HCT used?

HCT shows up in lab orders and charting. Its category here is lab.

Is HCT on the Joint Commission Do Not Use list?

No, but ISMP lists HCT as an error-prone abbreviation. ISMP's suggested practice: Write the full drug name.

Source: MedlinePlus Appendix B: Some Common Abbreviations (NLM); 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. Data as of October 23, 2026. Last updated October 23, 2026. How we source data. Spotted an error? Send a correction.

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