Haematology

Michigan PICC Thrombosis Score calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Another central catheter present at PICC placement

White-cell count at insertion

×10⁹/L

Allowed range: 0–200 ×10⁹/L

Greater than 12,000 scores 1. 12,000 scores 0.

Active cancer

PICC lumens

History of venous thromboembolism

Never scores 0. A history beyond 30 days scores 2. A history within 30 days scores 3. The 2 and the 3 are not added.

Result

3 fields remaining

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Clinical inputs

Another central catheter present at PICC placement
White-cell count at insertion (/µL)Accepted range: 0 to 200000
Active cancer
PICC lumens
History of venous thromboembolism

Primary source

Chopra V et al. The Michigan Risk Score to predict peripherally inserted central catheter-associated thrombosis. J Thromb Haemost. DOI: 10.1111/jth.13794. PMID: 28796444. Another central catheter scores 1. White-cell count above 12,000 scores 1. Active cancer scores 2. A double-lumen PICC scores 2 and a triple or quad lumen scores 3. Prior thrombosis beyond 30 days scores 2, and thrombosis within 30 days scores 3. Class I is 0 points (47 of 5,377, 0.9%). Class II is 1–2 (1.6%). Class III is 3–4 (2.7%). Class IV is more than 4 (4.7%). (2017)

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