Bone Marrow Aspirate

Testing Laboratory

Waitematā | Northshore Hospital

Department

Haematology

Delphic Registration Code (Alpha Code)

WBMA

Test Code (Numeric Code)

1204

Laboratory Handling

Sample Stability

The aspirate sample should ideally be processed and films made immediately after collection for best results. Store at 4 degrees C up to 24 hours if there is to be a delay in processing. The bone marrow biopsy is stable for several days at room temperature if added to 10% formalin.

Synonyms

Bone Marrow

Turnaround Time

2 days

Aspirate results are usually available the day the biopsy is performed, otherwise will be available within a week. Trephine biopsy reporting can take 2 weeks; however, we like to issue complete reports so will wait for results of ancillary testing (cell markers and cytogenetics) before finalising the report which can take up to 4 weeks. Molecular studies are usually reported in a supplementary report. If preliminary results are required, please contact the Laboratory Haematology Registrar.

Specimen Type

  • Bone Marrow

Specimen Requirements

Tube/Container Type:

Preferred
  • Specimen Container
  • CPD (Yellow Top Tube)
  • EDTA (Lavender Cap)
  • Lithium Heparin - Non-gel (Green Cap)

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • Specimen Container
  • CPD (Yellow Top Tube)
  • EDTA (Lavender Cap)
  • Lithium Heparin - Non-gel (Green Cap)

Pre-testing Requirements

Organising the procedure: Consult with a Haematology Registrar, Haematologist or send a referral to arrange a bone marrow biopsy.

Last updated: 24/02/2026