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Sending a Sample for Cytogenetic Analysis

Sending a sample for Cytogenetic Analysis

Stocks of request forms are available by contacting the relevant section in the department. An appropriate request form must accompany each sample and it is essential that it is filled out legibly and completely before samples can be processed.  The request form must have following essential information:-  

  • Patient name
  • Date of birth
  • Hospital of origin
  • Hospital number
  • Referring clinician/ operator/ ward
  • Specimen type
  • Date taken
  • Indication for referral/ brief clinical details
  • Patient address
Where available please include the patients Community Health Index (CHI) number.   The specimen container must be labelled with at least 2 patient identifiers (name, date of birth, hospital number).

Inadequate labelling of the sample (including discrepancy between sample and request form, or un-named sample or request form) may result in the samples not being processed.   Please provide all relevant clinical details, family history and results of any previous genetic testing carried out with laboratory reference numbers where possible.  
Samples arriving in an unsuitable condition are unlikely to produce satisfactory karyotype results therefore they will not be processed and a repeat specimen will be requested. Such circumstances include:
  • Samples sent in the wrong container (e.g. blood samples in EDTA)
  • Samples delayed in transit for more than 4 days
  • Clotted blood samples
  • Samples arriving in a non viable condition (lysed, frozen, fixed, or infected)
  • Broken sample tubes
  • Samples with an inappropriate referral reason are generally not processed, however, we will attempt to contact the referring clinician to discuss the best course of action.
It is the responsibility of those taking and dispatching specimens to this department to ensure that these samples are sent in accordance with any National guidelines or local policies for the packaging, labelling and transport of biological material (including, where appropriate, UN Recommendations on the Transport of Dangerous Goods – Model Regulations, Fourteenth Revised Edition). The NHSGGC Transport & Disposal of Specimen Containers & Specimens Policy can be found by following this link. The department is happy to advise referring clinicians on appropriate methods for sending samples to the laboratory. Advice is available by contacting the appropriate laboratory section as detailed above.   If you do not have the necessary request form for a constitutional sample (prenatal or postnatal) you intend to send us please download this form and place the sample in an appropriate specimen container.   High Risk Samples

Any specimens that fall into this category must be correctly identified, and must be notified to the laboratory in advance.  Failure to do so may result in the analysis being delayed or not possible. For further details please refer to the Hospital’s Control of Infection policy on labelling and transport of high-risk samples, or contact the appropriate Principal Scientist.