Crevicular Fluid
Pronunciation: kreh-VIK-yoo-lar
Also written as: GCF — Gingival Crevicular Fluid
A serum-like fluid that seeps into the gingival sulcus from the adjacent connective tissue, often used as a biomarker in periodontal assessment.
Full Definition
Gingival crevicular fluid (GCF) is an inflammatory exudate found in the gingival sulcus that increases in volume and composition changes as periodontal disease progresses. It contains cytokines, enzymes, and breakdown products that reflect the local inflammatory state, making it a valuable diagnostic fluid in research and advanced clinical settings. Dental hygiene educators and researchers reference GCF in the context of host-modulation therapy and point-of-care diagnostics. Editors working on periodontal research manuscripts must be careful not to conflate crevicular fluid with saliva or sulcular fluid used loosely as synonyms. Its volume is measured using calibrated filter strips.
Usage
Usage note: Expand to 'gingival crevicular fluid (GCF)' on first use. 'Sulcular fluid' is an acceptable synonym in clinical notes but GCF is preferred in academic writing.
In Context
- "Elevated matrix metalloproteinase levels in the crevicular fluid correlated with greater attachment loss in this cohort." — Periodontal research article
- "The author used 'crevicular fluid' and 'sulcular fluid' interchangeably; standardize to 'gingival crevicular fluid (GCF)' throughout." — Manuscript editing note