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When to suspect TTP?

TTP is rare and presents similarly to other thrombotic microangiopathies (TMAs), making it difficult to diagnose.

aTTP is a medical emergency: diagnosing aTTP rapidly is critical and can save a life1

When a patient presents with:1

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Severe thrombocytopenia
(often platelets <30 × 109/L)

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Microangiopathic hemolytic anemia (MAHA)
characterized by the presence of schistocytes in blood smear

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With no identified cause

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suspect-ttp

Why TTP can be difficult to diagnose?

TTP is rare and presents similarly to other thrombotic microangiopathies (TMAs), making it a challenge to diagnose. All TMAs result in thrombosis of capillaries and arterioles due to endothelial injury.2,3

Suspect aTTP_how to diagnose

*STEC-HUS – Hemolytic Uremic Syndrome mediated by E. coli producing Shiga-type toxin or verotoxin;
HUS: Hemolytic Uremic Syndrome
Adapted from Kremer Hovinga et al. Nat Rev Dis Primers 20176

Tests and expected results in patients with suspected aTTP1

diagnostics

Diagnosis of TTP

Dr Marie Scully shares details on how to make a prompt differential diagnosis of TTP.

References

MAT-BE-2401121 - 1.0 - 12/2024