TNC_FRZN TNC_FRZN is an important parameter in finding a matching CBU, next to HLA.

In order to help to monitor not only the density but also the correctness of the value for TNC_FRZN, the data distribution is needed.

Based on WMDA global trend report and feedback from some registries, we improved the castigates as below:

Data unit 10^7

In order to help to monitor not only the density but also the used volume in each organisation, the VOL_FRZN data distribution is needed.

Preferred value is 25 or 50 in some CBBs who process the volume automatically, but as quite some CBUs are processed manually before, and the value can be in a range. 

VOL_FRZN value range is defined as below, may still need improvement:

Data unit: ml

Contact date is the last date there that was contact between the registry and the Donor.

This date is an important indicator for the ..to know that the Donor information is updated till the date.