Reticulocyte Haemoglobin Equivalent (Blood)

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Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Haematology

Delphic Registration Code (Alpha Code)

RET

Test Code (Numeric Code)

1016

Laboratory Handling

Phlebotomy

Collect:

  • 1x 4ml EDTA (Lavendar cap)
  • Paediatrics: 1x 0.25ml micro-EDTA

    Transport

    EDTA - Do Not Spin, goes through with FBC.

    Sample Stability

    Test Ambient (8 - 24°C) stability, able to report 4°C stability, able to report
    Reticulocyte (Ret, Retic) Less than 24-hours Less than 48-hours
    Reticulocyte Haemoglobin Equivalent (Ret HE) Less than 24-hours Less than 48-hours

    • Associated Tests

    Synonyms

    Ret He

    Turnaround Time

    2 hours

    Turnaround time 2 hours for non-urgent specimens, and 45 minutes for urgent specimens.

    Specimen Type

    • Whole Blood

    Specimen Requirements

    Tube/Container Type:

    Preferred
    • EDTA (Lavender Cap)
    Preferred Sample Volume (ml)

    4

    Minimum Sample Volume (ml)

    1

    No of Samples Required

    1

    Paediatric Specimen Requirements

    Tube/Container Type:

    Preferred
    • EDTA (Microtainer)
    Minimum Sample Volume (ml)

    0.25

    Last updated: 26/08/2026