A modification of the MedCo front-end project which brings reference intervals to the rescue. Check the following link for a documentation about the BioRef-specific implementation: https://github.com/CHUV-DS/glowing-bear-medco-bioref/blob/bioref/bioref_doc.md
Left-side zeros are present in the interpolated curve, while right-side zeros are not. Solution: remove the left-side zeros.