Inclusion Criteria:

1. Adult patient over 18 years of age

2. Patient with signed informed consent

3. Patient managed by:

   • one of the structures involved (UDR/ SAU Jean Verdier, MSP Pantin, Cabinet Médical du Dr TAYBALY à Aulnay-sous-Bois) for referral to the UDR for rapid diagnosis (phases 1 and 2)
   • the Health Bus (phase 3)

Exclusion Criteria:

1. Patient on the UDR iron-deficiency anemia clinical pathway

2. Patient deprived of liberty by judicial or administrative decision

3. Patient who does not speak French and cannot benefit from the presence of a relative or translator (physical or online)

4. Patient with a contraindication to the use of EchOPen:

   • patients with a body mass index greater than 34.9 kg/m2
   • life-threatening patients requiring emergency medical care.