Pretest clinical probability for HIT from thrombocytopenia pattern, timing, thrombosis sequelae, and alternative diagnoses (0–8).

Coagulation · Updated 4/19/2026

Punnett phenotype distribution from parental ABO genotypes.

Transfusion Medicine · Updated 4/19/2026

Computes PT ratio (INR approximation), aPTT ratio, and reports fibrinogen.

Coagulation · Updated 4/19/2026

Estimates cryoprecipitate units required to reach target fibrinogen.

Transfusion Medicine · Updated 4/19/2026

Estimates DLI infusion volume from target CD3 dose, patient weight, and product concentration.

Transplant Medicine · Updated 4/19/2026

Educational oxidant-risk categorization of medications in G6PD deficiency.

Drug Safety · Updated 4/19/2026

Mentzer index = MCV (fL) / RBC (million/µL). Index < 13 suggests thalassemia trait; >= 13 suggests iron deficiency.

Laboratory Medicine · Updated 4/19/2026

RBC apheresis exchange volume estimate from HbS targets (approximate).

Hematology Calculators · Updated 4/19/2026

Parenteral iron deficit estimate from weight, Hb delta, and depot iron.

Infusion Calculators · Updated 4/19/2026

Total WBC age-specific reference ×10³/µL.

Laboratory Calculators · Updated 4/19/2026