The barcode check characters are determined by adding 60 to the checksum. The calculated checksum is used to generate both the barcode check characters used in the flag positions of the ISBT 128 barcode and the eye-readable check character. Find the modulus 37 value of the result of (5). Subtract the value obtained in (4) from 38.Ħ. Find the modulus 37 value of the sum from (3).ĥ. Sum the weighted check values from (2).Ĥ. For each character determine its weighted check value by multiplying the check value from (1) by the nth power of 2 where n is the position of the character from the right-hand end of the string.ģ. For each character in the string determine its check value as required by ISO 7064 (see Table A2.1).Ģ. The calculation is based on the donation number string excluding the leading ‘=‘ symbol and the flag characters.ġ.
This Annex shows how to calculate the check character for a given number. ISBT 128 donation numbers utilise check characters based on the ISO 7064 modulus 37,2 algorithm.
Annex 5: Blood Components for Contingency Useĭownload as PDF Annex 2: ISBT 128 check character calculation.A4.3 Convalescent Plasma (COVID-19), FFP, for Neonates and Infants, Leucocyte Depleted.A4.2 Convalescent Plasma (COVID-19), FFP, Leucocyte Depleted.Annex 2: ISBT 128 check character calculation.Annex 1: Standards available from the National Institute for Biological Standards and Control.27: Specification for labelling consumables used in therapeutic product production.26: Specification for blood pack base labels.25: Standards for electronic data interchange within the UK Blood Transfusion Services.24: Specification for the uniform labelling of human tissue products using ISBT 128.23: Specification for the uniform labelling of blood, blood components and blood donor samples.21: Tissue banking: tissue retrieval and processing.20: Tissue banking: selection of donors.15: Molecular typing for red cell antigens.14: Guidelines for the use of DNA/PCR techniques in Blood Establishments.13: Patient testing (red cell immunohaematology).12: Donation testing (red cell immunohaematology).10: Investigation of suspected transfusion-transmitted infection.9: Microbiology tests for donors and donations: general specifications for laboratory test procedures.8.5: Evaluation of plasma for fractionation for the manufacture of immunoglobulin.8: Evaluation of novel blood components, production processes and blood packs: generic protocols.6: Evaluation and manufacture of blood components.5: Collection of a blood or component donation.4: Premises and quality assurance at blood donor sessions.
3: Care and selection of whole blood and component donors (including donors of pre-deposit autologous blood).
Quality in blood and tissue establishments and hospital blood banks