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Test Code CYG Cytogenetics (Cancer Chromosomal Karyotyping)

Important Note

Refer to Flow Chart for ordering guide

Additional Codes

EPIC Ordering Code LAB3040923
NBS Code LBC01125
Service Code 1680004

 

Specimen Requirements

Submit one of the following:

 

Fresh specimen required

 

(A) Specimen Type: Bone Marrow 
      Container/Tube: Green Top (Sodium Heparin)
      Volume: 1.0 - 2.0 mL

 

(B) Specimen Type: Peripheral Blood
      Container/Tube: Green Top (Sodium Heparin)
      Volume: 4.0 - 8.0 mL, preferably presence of > 5% blasts

 

(C) Specimen Type: Lymph Node / Solid Tumour / Bone core
      Container: Sterile tube with 3.0 mL collection media.
(Prearrange with Cytogenetics Laboratory for collection media)

 

(D)  Specimen Type: Effusions (CSF, Pleural Effusion etc)
      Container: Sterile universal container
      Volume: 3.0 - 6.0mL,preferably presence of > 10% cells

 

Additional Collection Instructions: All specimens should be shipped to the lab within 12 - 24 hours of collection. Specimen received after 48 hours of collection will nonetheless be processed but results may be compromised. For overseas specimens, avoid shipping on Friday or eve of public holidays.

Specimen Stability

Fresh specimen required

Ambient (Preferred) 12 hours 
Refrigerate 12 – 48 hours

Specimen Condition

Bone Marrow/Peripheral Blood Haemolysis Alert
  Icterus OK
  Lipaemia OK
  Others: Frozen or collected in EDTA tube Reject
Lymph Node/Solid Tumour/Bone Core Frozen or formalin fixed  Reject

 

Methodology

Cell culture followed by chromosome analysis.

Days and Times Performed

Monday through Saturday (Office hours only). TAT 2 - 3 weeks

Reference Interval

An interpretative report will be provided.

Testing Laboratory

National University Hospital
Cytogenetics, 67722512

Useful For

  1. Detection of chromosome anomalies, which aid In diagnosis, prognosis, and management of haematological malignancies and other cancers.
  2. Monitoring treatment response.
  3. Detection of minimal residual disease.

Update

Last updated 04/04/2026

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