---
title: "Fibrinogen Activity (Clauss) Test: What It Measures"
description: "It measures how well fibrinogen forms a clot to assess bleeding or clot risk, with easy ordering and Quest-based testing through Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/fibrinogen-activity-clauss"
last-updated: 2026-08-22
---

# Fibrinogen Activity (Clauss) Test: What It Measures

> It measures how well fibrinogen forms a clot to assess bleeding or clot risk, with easy ordering and Quest-based testing through Vitals Vault.

---

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