| LG49389-6 | Proinsulin · Pt · Ser/Plas | 2 |
| LG49390-4 | Promethazine · Pt · Ser/Plas | 2 |
| LG49399-5 | Propoxyphene+Norpropoxyphene · Pt · Ser/Plas | 2 |
| LG49400-1 | Propranolol · Pt · Gast fld | 2 |
| LG49402-7 | Propranolol · Pt · Ser/Plas | 2 |
| LG49403-5 | Propranolol · Pt · Urine | 2 |
| LG49405-0 | Propylene glycol · Pt · Ser/Plas | 2 |
| LG49406-8 | Propylene glycol · Pt · Urine | 2 |
| LG49422-5 | Protein · Pt · Ser/Plas | 2 |
| LG49429-0 | Protein · Pt · Plas | 2 |
| LG49445-6 | Protein.monoclonal.beta · Pt · Urine · Electrophoresis | 2 |
| LG49447-2 | Protoporphyrin · Pt · Ser/Plas · 562.67 g/mole | 2 |
| LG49448-0 | Protoporphyrin · Pt · Bld · 562.67 g/mole | 2 |
| LG49449-8 | Protoporphyrin · Pt · RBC · 562.67 g/mole | 2 |
| LG49452-2 | Protoporphyrin.zinc · Pt · RBC | 2 |
| LG49460-5 | Pseudoephedrine · Pt · Ser/Plas | 2 |
| LG49465-4 | Pyridoxal phosphate · Pt · Ser/Plas | 2 |
| LG49514-9 | Secobarbital · Pt · Ser/Plas | 2 |
| LG49517-2 | Secobarbital · Pt · Urine | 2 |
| LG49527-1 | Silver · Pt · RBC | 2 |
| LG49528-9 | Silver · Pt · Urine | 2 |
| LG49529-7 | Silver · 24H · Urine | 2 |
| LG49531-3 | Silver · Pt · Ser/Plas | 2 |
| LG49533-9 | Silver · Pt · Bld | 2 |
| LG49534-7 | Silver · Pt · Body fld | 2 |
| LG49565-1 | Streptococcus pneumoniae 9 Ab · Pt · Ser | 2 |
| LG49588-3 | Strontium · Pt · Urine | 2 |
| LG49604-8 | Sulfate · Pt · Urine · 96.056 g/mole | 2 |
| LG49606-3 | Sulfate · 24H · Urine · 96.056 g/mole | 2 |
| LG49623-8 | Tellurium · Pt · Urine | 2 |
| LG49632-9 | Temazepam · Pt · XXX | 2 |
| LG49634-5 | Temazepam · Pt · Ser/Plas | 3 |
| LG49642-8 | Testosterone.free+weakly bound · Pt · Ser/Plas | 2 |
| LG49653-5 | Thioridazine · Pt · Gast fld | 2 |
| LG49655-0 | Thioridazine · Pt · Ser/Plas | 2 |
| LG49656-8 | Thioridazine · Pt · Urine | 2 |
| LG49658-4 | Thiosulfate · Pt · Urine · 112.117 g/mole | 2 |
| LG49663-4 | Thyroglobulin · Pt · Ser/Plas | 2 |
| LG49670-9 | Thyroxine binding globulin · Pt · Ser/Plas | 3 |
| LG49672-5 | Thyroxine.free · Pt · Ser/Plas | 3 |
| LG49673-3 | Thyroxine.free · Pt · Bld.dot | 2 |
| LG49674-1 | Thyroxine.free · Pt · Ser/Plas · Dialysis | 2 |
| LG49676-6 | Thyroxine.free · Pt · Ser/Plas · IA | 2 |
| LG49683-2 | Timolol · Pt · Ser/Plas | 2 |
| LG49685-7 | Tobramycin · Pt · Ser/Plas | 2 |
| LG49689-9 | Tocainide · Pt · Ser/Plas | 2 |
| LG49691-5 | Tolbutamide · Pt · Ser/Plas | 2 |
| LG49697-2 | Transferrin · Pt · Ser/Plas | 3 |
| LG49702-0 | Trichloroethane · Pt · Bld | 2 |
| LG49711-1 | Trifluoperazine · Pt · Ser/Plas | 2 |