Info

Parameter

Neonate

Adult level

Platelet count Prothrombin time APTT

Thrombin time Bleeding time Fibrinogen

150-400 x 109/L

few sec longer than adult up to 25% increase

2-10 min 2.0-4.0g/L

as adult up to 1 week by 2-9 months as adult as adult as adult

Vit K factors Factor II Factor VII Factor IX Factor X

30-50% adult level 30-50% adult level 20-50% adult level 30-50% adult level

up to 6 months by 1 month up to 6 months up to 6 months

Factor V Factor VIII vW factor Factor XI Factor XII Factor XIII

as adult

Variable: 50-200% adult level usually raised (up to 3 x adult level) 20-50% adult level 6-12 months 20-50% adult level 3-6 months 50-100% adult level 1 month

FDP/XDP AT

Protein C Protein S

up to twice adult level 50-80% adult level 30-50% adult level 30-50% adult level

by 7 days 6-12 months up to 24 months 3-6 months

Plasminogen

30-80% adult level

2 weeks

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