These are optional tests offered to producers. With most of the optional tests, the test result is provided without recommendations. An exception is the triazine residue analysis for tobacco fields. UK Extension Agents or Specialists may help with individual interpretation of the results for tests that do not come with a recommendation. When using the A, H, C, M, or G forms for these tests, place the code for the test on a yellow Post It note and place it on the form. When using the SoilData program enter the code in the "Formless Entry" window at "Test to be made:". The sample must be submitted to the Lexington lab for these tests.
| Material Tested | Cost | Code | Test |
| Soil | $10.00 | 05 | Heavy Metals, Mehlich III Extraction (Cd, Cr, Ni, Pb, Zn, Cu, Mo) (Memo on this test) |
| Soil | $24.00 | TC | Sand, Silt, Clay, and Textural Class |
| Soil | $19.00 | BS | Cation Exchange Capacity, Bases, and Base Saturation |
| Soil | $25.00 | 15 | Triazine Residue (Atrazine and Simazine) |
| Soil | $4.00 | BO | Hot water extract B |
| Soil | $3.75 | OM | Organic Matter |
| Soil | $3.00 | SS | Soluble Salts |
| Soil | $4.00 | TN | Total Nitrogen |
| Soil | $3.00 | WH | Water Holding Capacity |
| Soil or Mine spoil | $19.00 | PA | Potential acidity (cost includes routine soil test) |
| Soil or Mine spoil | $3.00 | X1 | Neutralization potential |
| Soil | $3.00 | B1 | Mehlich III B |
| Soil | $3.00 | CU | Mehlich III Cu |
| Soil | $3.00 | M1 | Mehlich III Mn |
| Soil | $3.00 | NA | Mehlich III Na |