Activated Partial Thromboplastin Time (APTT) – Heparin

  1. Home
  2. Waitematā
  3. Test Guide
  4. Activated Partial Thromboplastin Time (APTT) – Heparin
Print Page

Testing Laboratories

Waitematā | Northshore Hospital
Waitematā | Waitakere Hospital

Department

Haematology

Delphic Registration Code (Alpha Code)

APTH

Test Code (Numeric Code)

1694

Laboratory Handling

Phlebotomy

Tube must be filled up to the "Fill-Line"

Registration

Use this code for APTT only if patient is on heparin

Sample Stability

4 hours

Synonyms

APTT on Heparin

Turnaround Time

1 hour

Specimen Type

  • Plasma

Specimen Requirements

Tube/Container Type:

Preferred
  • Citrate (Blue Cap)
Preferred Sample Volume (ml)

2.7

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • Citrate (Microtainer)

Last updated: 02/07/2026