Special Requirements for Transfusion Laboratory
Any mistakes or omissions in the
labelling of samples and request cards can lead to deleterious effects on the
patient. In order to avoid any such possibility, users of the laboratory are
urged to comply with the following safety check procedures.
NB - Incorrectly or incompletely labelled
samples/request forms will not be accepted by the Transfusion Laboratory. FULL
IDENTIFICATION IS ABSOLUTELY NECESSARY.
- Positive patient identification must be made either by direct questioning,
reference to a patient's hospital identity bracelet or, for unconscious
patients, the use of a unique numbering system.
- Requests for group and/or cross-match must be in a special blood transfusion tube which
is then clearly labelled by hand with all available patient identification
(name, address, date of birth, hospital number). PRE-PRINTED IDENTIFICATION
LABELS SHOULD NOT BE USED. Sample tubes must not be labelled in advance.
- The accompanying request form MUST BE completed by a doctor using capital
letters with all the available patient identification (name, address, date of
birth, hospital number).
- Clear instructions as to when, where and why blood grouping or
cross-matching is being requested must be included in the spaces indicated on
the request form.
- Group and Save Requests Samples are ABO and Rhesus (D) grouped and
screened for atypical antibodies. The plasma may be saved for up to 7 days depending on the
patient's transfusion history.
- Cross-Match Requests ABO and Rhesus (D) compatible donor units are
selected and cross-matched for named patients and held for that patient until
9.00 am on the following day after the date for which the request was made. If your
patient has been transfused, a fresh sample for further cross-matching will be
required after 3 days. Please allow as much
time as possible to complete grouping, antibody screening and/or
cross-matching, in case atypical antibodies are encountered. The hospital
operates a Maximum Surgical Blood Ordering Schedule . Under normal circumstances, the Transfusion Laboratory
will cross-match according to the MSBOS, unless clear reasons for doing
otherwise are provided by the requesting clinician. For further details,
please contact the laboratory.
- Accident and Emergency Samples An A/E number is only acceptable for
identification purposes on requests for cross-matching of blood for IMMEDIATE
transfusion, not for group and save serum samples.
Transfusion Two Sample Rule
To improve patient safety, The British Committee for Standards in Haematology 2012 guidelines state that a second transfusion sample should be requested for confirmation of the blood group for a first time patient prior to transfusion. This is implemented for this Trust.