Sample type: Whole Blood

Test name: APTT/APTT-R

Condition / Indication: For heparin monitoring and part of the clotting screen.

Special precautions & notes: Inaccurate results can seen in clotted samples, venepuncture near a drip site, underfilled samples and samples aged >24 hours.

Reference range: Note new reference range from 24/04/23: 25 - 37 sec (not on anticoagulants), Therapeutic ratio (1.5 – 2.5)

Container: Citrate (Blue top)

Ideal volume (mL): 2.7 mL

Discipline: Haematology

Turnaround time: 24 hours