How to choose concept_id of precipitation concentration ratio?

CDM Builders
1

The antibody titer value from Measurement table is in the form of precipitation concentration ratio.

If the value in the following format ‘1:6.1’ has been entered, how should we insert the concept id?

and where do we insert the concept id in operator_concept_id or value_as_concept_id?

thanks.

2

@Dahye:

For antibody titers do the following:

measurement_concept_id - the LOINC concept for the antibody you are looking at
operator_concept_id: stays empty (which is the equivalent of = )
value_as_number: 0.163934426 (which is 1 divided by 6.1)
value_as_concept_id: stays empty. This is only for things like “positive”, “negativ”, etc.
unit_concept_id: 8525 (stands for {titer}, which is really a unitless unit)