| LIM0978 | Lacosamide | | | | | | | | | |
| BIO12 | Lactate | | | | | | | | | |
| LIM0980 | Lactate dehydrogenase in cerebrospinal fluid | | | | | | | | | |
| BIO49 | Lactate Dehydrogenase, LDH | | | | | | | | | |
| LIM0979 | Lactate in CSF | | | | | | | | | |
| LIM0981 | Lactoferrin in feces | | | | | | | | | |
| LIM0982 | Lamotrigine (Lamotrigin) | | | | | | | | | |
| LIM1121 | Lead in hair | | | | | | | | | |
| LIM1123 | Lead in serum | | | | | | | | | |
| LIM1122 | Lead in urine | | | | | | | | | |
| CEG055 | Leber Congenital Amaurosis | | | | | | | | | |
| LIM0988 | Leflunomide (Leflunomid, Arava) | | | | | | | | | |
| CEG009 | Left Ventricular Noncompaction Cardiomyopathy, LVNC | | | | | | | | | |
| LIM0987 | Leptin | | | | | | | | | |
| LIM0986 | Leucine arylamidase | | | | | | | | | |
| CEG041 | Leukodystrophy and Leukoencephalopathy | | | | | | | | | |
| CEG160 | Leukodystrophy and Leukoencephalopathy | | | | | | | | | |
| CEG044 | Leukodystrophy and Leukoencephalopathy, differential diagnosis | | | | | | | | | |
| CEG161 | Leukodystrophy/Leukoencephalopathy and differential diagnosis | | | | | | | | | |
| LIM0983 | Levetiracetam (Keppra) | | | | | | | | | |
| LIM0984 | Levodopa (L-Dopa) | | | | | | | | | |
| LIM0985 | Levomepromazine | | | | | | | | | |
| CEG184 | Limb malformations: isolated brachydactyly, synostoses, split-hand/foot, polydactyly, syndactyly, and selected genetic syndromes with limb malformations | | | | | | | | | |
| CEG167 | Limb-girdle Muscular Dystrophies | | | | | | | | | |
| MBI53 | Limfadenitis Panel, IgM separatly (Adenovirus 3, Mumps, Measles, Coxsackie B5, A9, Rubella, HSV 1, HSV 2, HHV 6, EBV VCA, EBV EA, CMV, T.pallidum, C.pneumoniae, C.trachomatis, T.gondii) | | | | | | | | | |
| BIO50 | Lipase | | | | | | | | | |
| LIM0994 | Lipid Peroxidase | | | | | | | | | |
| LIM0992 | Lipid-associated Sialic Acid, LSA | | | | | | | | | |
| LIM0993 | Lipid-associated Sialic Acid, LSA | | | | | | | | | |
| LIM0995 | Lipopolysaccharide-binding protein | | | | | | | | | |
| LIM0997 | Lipoprotein-associated phospholipase А2, Lp-PL-A2 | | | | | | | | | |
| LIM0996 | Lipoproteins, electrophoresis | | | | | | | | | |
| LIM0999 | Lithium in serum | | | | | | | | | |
| LIM0998 | Lithium in urine | | | | | | | | | |
| LIM0899 | Long chain fatty acids (7 acids, separate determination) | | | | | | | | | |
| CEG011 | Long QT Syndrome | | | | | | | | | |
| LIM1000 | Lopinavir | | | | | | | | | |
| LIM1001 | Lorazepam | | | | | | | | | |
| LIM1002 | Lormetazepam | | | | | | | | | |
| BIO16 | Low-Density Lipoprotein cholesterol, LDL | | | | | | | | | |
| HEM08 | Lupus Anticoagulant, screen | | | | | | | | | |
| HOR02 | Luteinizing Hormone, LH | | | | | | | | | |
| CEG204 | Lymphedema | | | | | | | | | |
| LIM1155 | Lymphocyte Transformation Test (LTT): Borrelia | | | | | | | | | |
| LIM1158 | Lymphocyte Transformation Test (LTT): ceramics and cements (vanadium, aluminum, titanium, cobalt, chromium, barium, silicium) | | | | | | | | | |
| LIM1156 | Lymphocyte Transformation Test (LTT): gold, nickel, palladium, chromium, cobalt, platinum, mercury, copper, silver, tin, methyl acrylate, HEMA, TEGDMA, BISGMA | | | | | | | | | |
| LIM1157 | Lymphocyte Transformation Test (LTT): native material brought to the laboratory (composite materials, prostheses, cements, composites, osteoplastic materials, pins, etc.) | | | | | | | | | |
| CEG113 | Lysosomal Disorders | | | | | | | | | |
| CEG035 | Lysosomal Disorders | | | | | | | | | |
| CEG109 | Lysosomal storage disorders | | | | | | | | | |
| CEG188 | Lysosomal storage disorders with skeletal involvement | | | | | | | | | |
| LIM0989 | Lysozym in cerebrospinal fluid | | | | | | | | | |
| LIM0991 | Lysozym in serum | | | | | | | | | |
| LIM0990 | Lysozym in urine | | | | | | | | | |