| Granulocytes | Synovial fluid | Hematology and Cell counts | LP443830-7 | 2 |
| Guanidinoacetate | DBS | Chemistry - non-challenge | LP411669-7 | 2 |
| Guanine | LP199583-8 | 2 |
| Guanosine | LP199590-3 | 2 |
| Hairy cells | LP14038-1 | 2 |
| Hairy cells | Blood | Hematology and Cell counts | LP392957-9 | 2 |
| Helicobacter pylori | Stool | Microbiology | LP374956-3 | 2 |
| Hemoglobin | Blood | Hematology and Cell counts | LP392452-1 | 2 |
| Hemoglobin | Blood arterial | Hematology and Cell counts | LP392453-9 | 2 |
| Hemoglobin | Blood central venous | Hematology and Cell counts | LP426952-0 | 2 |
| Hemoglobin | Cerebral spinal fluid | Hematology and Cell counts | LP392461-2 | 2 |
| Hemoglobin | Cord blood | Hematology and Cell counts | LP443448-8 | 2 |
| Hemoglobin | Cord blood | Red Blood Cells | Hematology and Cell counts | LP443447-0 | 2 |
| Hemoglobin | Reticulocytes | Hematology and Cell counts | LP392466-1 | 2 |
| Hemoglobin | Urine | Urinalysis | LP402527-8 | 2 |
| Hemoglobin A | Blood | Hematology and Cell counts | LP393561-8 | 2 |
| Hemoglobin A2 | LP14451-6 | 2 |
| Hemoglobin A2 | Blood | Hematology and Cell counts | LP393565-9 | 2 |
| Hemoglobin C | LP16420-9 | 2 |
| Hemoglobin C | Blood | Hematology and Cell counts | LP393603-8 | 2 |
| Hemoglobin pattern | LP18156-7 | 2 |
| Hemoglobin pattern | Blood | Hematology and Cell counts | LP393587-3 | 2 |
| Hemoglobin.other | LP19281-2 | 2 |
| Hemoglobin.other | Blood | Hematology and Cell counts | LP393664-0 | 2 |
| Heparin | LP15998-5 | 2 |
| Heptacarboxylporphyrin | Serum or Plasma | Chemistry - non-challenge | LP386453-7 | 2 |
| Heptacarboxylporphyrin | Urine | Chemistry - non-challenge | LP386455-2 | 2 |
| Heptacarboxylporphyrin I | Urine | Chemistry - non-challenge | LP411805-7 | 2 |
| Heptacarboxylporphyrin III | Urine | Chemistry - non-challenge | LP411806-5 | 2 |
| Hexacarboxylporphyrin | Serum or Plasma | Chemistry - non-challenge | LP386467-7 | 2 |
| Hexacarboxylporphyrin I | Urine | Chemistry - non-challenge | LP411807-3 | 2 |
| Hexacarboxylporphyrin III | Urine | Chemistry - non-challenge | LP411808-1 | 2 |
| Hexadecadienoate (C16:2) | LP33062-8 | 2 |
| Hexadecenoate (C16:1w9) | LP33063-6 | 2 |
| Hexanoylcarnitine (C6) | LP19308-3 | 2 |
| Hexanoylglycine | LP14514-1 | 2 |
| Hexanoylglycine | Urine | Chemistry - non-challenge | LP383946-3 | 2 |
| Hippurate crystals | LP32878-8 | 2 |
| Hippurate crystals | Urine sediment | Urinalysis | LP402404-0 | 2 |
| Histiocytes | Body fluid | Hematology and Cell counts | LP393062-7 | 2 |
| Histiocytes | Cerebral spinal fluid | Hematology and Cell counts | LP393064-3 | 2 |
| Histiocytes | Urine sediment | Urinalysis | LP402496-6 | 2 |
| HIV 1 | Serum | Microbiology | LP378018-8 | 2 |
| Homocysteine | Serum or Plasma | Chemistry - non-challenge | LP386295-2 | 2 |
| Horowitz index | LP65891-1 | 2 |
| Human papilloma virus | LP14836-8 | 2 |
| Human papilloma virus | XXX | Microbiology | LP444684-7 | 2 |
| Hyaline casts | Urine | Urinalysis | LP402441-2 | 2 |
| Iduronate-2-Sulfatase | LP14029-0 | 2 |
| IgA | Urine | Chemistry - non-challenge | LP384795-3 | 2 |
| IgA.kappa | LP182354-3 | 2 |
| IgA.kappa | Serum or Plasma | Chemistry - non-challenge | LP384901-7 | 2 |
| IgE | LP14671-9 | 2 |
| IgG | Cerebral spinal fluid | Chemistry - non-challenge | LP384829-0 | 2 |
| IgG | Urine | Chemistry - non-challenge | LP384833-2 | 2 |
| IgG.kappa | LP182350-1 | 2 |
| IgG.kappa | Serum or Plasma | Chemistry - non-challenge | LP384903-3 | 2 |
| IgM | Urine | Chemistry - non-challenge | LP384863-9 | 2 |
| IgM.kappa | LP182355-0 | 2 |
| IgM.kappa | Serum or Plasma | Chemistry - non-challenge | LP384906-6 | 2 |
| Immature basophils | LP31542-1 | 2 |
| Immature basophils | Blood | Hematology and Cell counts | LP392749-0 | 2 |
| Immature eosinophils | LP31543-9 | 2 |
| Immature eosinophils | Blood | Hematology and Cell counts | LP392796-1 | 2 |
| Immature granulocytes | LP31778-1 | 2 |
| Immature granulocytes | Blood | Hematology and Cell counts | LP392634-4 | 2 |
| Immature monocytes | Blood | Hematology and Cell counts | LP393039-5 | 2 |
| Immature reticulocytes | LP30869-9 | 2 |
| Immature reticulocytes | Blood | Hematology and Cell counts | LP392541-1 | 2 |
| Immunodeficiency markers | LP36896-6 | 2 |
| Immunodeficiency markers | XXX | Cell markers | LP400838-1 | 2 |
| Immunoglobulin light chains | Urine | Chemistry - non-challenge | LP384874-6 | 2 |
| Influenza virus A | LP14239-5 | 2 |
| Influenza virus A | XXX | Microbiology | LP378369-5 | 2 |
| Inosine | LP15666-8 | 2 |
| Insulin | Serum or Plasma | Chemistry - non-challenge | LP381336-9 | 2 |
| Insulin-like growth factor | LP20163-9 | 2 |
| Insulin-like growth factor-I | LP15669-2 | 2 |
| Insulin-like growth factor-I | Serum or Plasma | Chemistry - non-challenge | LP381497-9 | 2 |
| Interferon | LP16468-8 | 2 |
| Interpretation | Serum or Plasma | Chemistry - non-challenge | LP386675-5 | 2 |
| Iodine | Hair | Chemistry - non-challenge | LP385062-7 | 2 |
| Iron | Hair | Chemistry - non-challenge | LP385072-6 | 2 |
| Iron | Serum or Plasma | Chemistry - non-challenge | LP385074-2 | 2 |
| Iron binding capacity | LP15678-3 | 2 |
| Iron Satn | Serum or Plasma | Chemistry - non-challenge | LP416972-0 | 2 |
| Iron saturation | LP32756-6 | 2 |
| Isobutyrylglycine | LP14515-8 | 2 |
| Isobutyrylglycine | Urine | Chemistry - non-challenge | LP383953-9 | 2 |
| Isoleucine | Serum or Plasma | Chemistry - non-challenge | LP384074-3 | 2 |
| Isovalerylglycine | LP14516-6 | 2 |
| Isovalerylglycine | Urine | Chemistry - non-challenge | LP383961-2 | 2 |
| Kappa light chains.free | Serum or Plasma | Chemistry - non-challenge | LP441002-5 | 2 |
| Ketones | Urine | Chemistry - non-challenge | LP386315-8 | 2 |
| Ketones | Urine | Urinalysis | LP402528-6 | 2 |
| L-serine | LP201662-6 | 2 |
| Lactate | Blood | Chemistry - non-challenge | LP385561-8 | 2 |
| Lactate | Serum or Plasma | Chemistry - non-challenge | LP385575-8 | 2 |
| Lactate dehydrogenase | Body fluid | Chemistry - non-challenge | LP383074-4 | 2 |
| Lactate dehydrogenase isoenzymes | Serum or Plasma | Chemistry - non-challenge | LP383088-4 | 2 |