Constans Score (upper-extremity DVT)
Constans score for upper-extremity DVT pretest probability: venous material, localized pain, unilateral edema, and a plausible alternative diagnosis (Constans 2008).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Venous material in the limb
- Yes
- Localized pain
- Yes
- Unilateral pitting edema
- Yes
Result: Constans score +3: high pretest probability of upper-extremity DVT (~64-70%).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Bands
- low <= 0 (~9-13% UE-DVT), intermediate 1, high 2-3 (~64-70%). The only validated UE-DVT pretest tool.
What you enter
- Venous material in the limb (central line or pacemaker)
- Localized pain
- Unilateral pitting edema
- Other diagnosis at least as plausible (-1)
How this is calculated
- Items
- venous material (central line / pacemaker) +1, localized pain +1, unilateral pitting edema +1, alternative diagnosis at least as plausible -1 (total -1 to +3).
Constans J, Salmi LR, Sevestre-Pietri MA, et al. A clinical prediction score for upper extremity deep venous thrombosis. Thromb Haemost. 2008;99(1):202-207. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.