```ruby
require_dependency "renalware/pathology"

module Renalware
  module Pathology
    class ObservationsController < Pathology::BaseController
      before_filter :load_patient

      def index
        presenter = ViewObservations.new(@patient, description_codes).call

        render :index, locals: {
          rows: presenter.to_a,
          number_of_records: presenter.limit
        }
      end

      private

      def description_codes
        [
          "HGB", "MCV", "MCH", "RETA", "HYPO", "WBC", "LYM", "NEUT", "PLT",
          "ESR", "CRP", "FER", "FOL", "B12", "URE", "CRE", "EGFR", "NA", "POT",
          "BIC", "CCA", "PHOS", "PTHI", "TP", "GLO", "ALB", "URAT", "BIL",
          "ALT", "AST", "ALP", "GGT", "BGLU", "HBA", "HBAI", "CHOL", "HDL",
          "LDL", "TRIG", "TSH", "CK", "URR", "CRCL", "UREP", "AL"
        ]
      end
    end
  end
end
```

Move 'RETA' display after 'PLT' to remove gap
user
```ruby
require_dependency "renalware/pathology"

module Renalware
  module Pathology
    class ObservationsController < Pathology::BaseController
      before_filter :load_patient

      def index
        presenter = ViewObservations.new(@patient, description_codes).call

        render :index, locals: {
          rows: presenter.to_a,
          number_of_records: presenter.limit
        }
      end

      private

      def description_codes
        [
          "HGB", "MCV", "MCH", "HYPO", "WBC", "LYM", "NEUT", "PLT", "RETA",
          "ESR", "CRP", "FER", "FOL", "B12", "URE", "CRE", "EGFR", "NA", "POT",
          "BIC", "CCA", "PHOS", "PTHI", "TP", "GLO", "ALB", "URAT", "BIL",
          "ALT", "AST", "ALP", "GGT", "BGLU", "HBA", "HBAI", "CHOL", "HDL",
          "LDL", "TRIG", "TSH", "CK", "URR", "CRCL", "UREP", "AL"
        ]
      end
    end
  end
end
```
assistant