The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).
In this INDEX / MATCH example, the MATCH function will find the position of Jacket in column B, and the INDEX function will return the code from the same position in column A. Set up the worksheet as shown at right. Enter the following formula in cell B6: =INDEX($A$2:$A$4,MATCH(A6,$B$2:$B$4,0))
For a given row value r and column value c, we first find the row and column index to the table. The row index is MATCH(r, R1, 0) and the column index is MATCH(c, R1, 0) where R1 is the array where the table is stored. The 3rd argument of 0 indicates that only an exact match is acceptable.