lower reference value of picks the low value of the reference range, if there is one for that attribute. For example, given the following case fragment:
Cholesterol [0, 5.5] 7.3 5.6 6.1* Triglyceride [0, 1.8] 0.8 1.1 1.8 HDL [0.9, 3.5] 2.2 0.5*
HDL < lower reference value of HDL – 0.3
See also: upper reference value of