MCHC: Mean Cell Haemoglobin Concentration. A measurement of concentration of hemoglobin in red blood cells. Slightly lower range in this 66-year-old lady might suggest iron deficiency anemia but the hemoglobin count and MCV (Mean Cell Volume) need to be known as well.
LDL: The "bad cholesterol" responsible for cardiovascular events. Although 2.6 and below is ideal but 3.1 in this old lady is acceptable.
Total Bilirubin: Bilirubin is the pigment found in the bile juice. There are 2 types: conjugated (direct) and unconjugated (indirect) bilirubin. I need to know the breakdown of direct and indirect bilirubin levels to make further comments. Nevertheless, the slightly higher level in this lady should not cause too much worry.
Hope this helps!
Dr Teoh KA