| Hypochromia | LP17388-7 | 1 |
| Hypochromia | Blood | Hematology and Cell counts | LP393445-4 | 1 |
| Hypoxanthine | Cerebral spinal fluid | Chemistry - non-challenge | LP383515-6 | 1 |
| Hypoxanthine | Serum or Plasma | Chemistry - non-challenge | LP383517-2 | 1 |
| Hypoxanthine | Urine | Chemistry - non-challenge | LP383518-0 | 1 |
| Iduronate-2-Sulfatase | DBS | Chemistry - non-challenge | LP383065-2 | 1 |
| Iduronate-2-Sulfatase | White blood cells | Chemistry - non-challenge | LP383069-4 | 1 |
| IgA | Serum | Chemistry - non-challenge | LP384792-0 | 1 |
| IgA | Serum or Plasma | Chemistry - non-challenge | LP384793-8 | 1 |
| IgA subclass 1 | LP17234-3 | 1 |
| IgA subclass 1 | Serum | Chemistry - non-challenge | LP384800-1 | 1 |
| IgA subclass 2 | LP17248-3 | 1 |
| IgA subclass 2 | Serum | Chemistry - non-challenge | LP384803-5 | 1 |
| IgA.lambda | LP182353-5 | 1 |
| IgA.lambda | Serum or Plasma | Chemistry - non-challenge | LP384900-9 | 1 |
| IgD | LP15654-4 | 1 |
| IgD | Serum | Chemistry - non-challenge | LP384815-9 | 1 |
| IgE | Serum | Chemistry - non-challenge | LP384821-7 | 1 |
| IgE | Serum or Plasma | Chemistry - non-challenge | LP384822-5 | 1 |
| IgG | Serum | Chemistry - non-challenge | LP384831-6 | 1 |
| IgG | Serum or Plasma | Chemistry - non-challenge | LP384832-4 | 1 |
| IgG subclass 1 | LP15657-7 | 1 |
| IgG subclass 1 | Serum | Chemistry - non-challenge | LP384834-0 | 1 |
| IgG subclass 2 | LP15658-5 | 1 |
| IgG subclass 2 | Serum | Chemistry - non-challenge | LP384835-7 | 1 |
| IgG subclass 3 | LP15659-3 | 1 |
| IgG subclass 3 | Serum | Chemistry - non-challenge | LP384836-5 | 1 |
| IgG subclass 4 | LP15660-1 | 1 |
| IgG subclass 4 | Serum | Chemistry - non-challenge | LP384837-3 | 1 |
| IgG synthesis rate | LP18370-4 | 1 |
| IgG synthesis rate | Serum and CSF | Chemistry - non-challenge | LP384838-1 | 1 |
| IgG.lambda | LP182352-7 | 1 |
| IgG.lambda | Serum or Plasma | Chemistry - non-challenge | LP384908-2 | 1 |
| IgM | Serum | Chemistry - non-challenge | LP384861-3 | 1 |
| IgM | Serum or Plasma | Chemistry - non-challenge | LP384862-1 | 1 |
| IgM.lambda | LP182378-2 | 1 |
| IgM.lambda | Serum or Plasma | Chemistry - non-challenge | LP384905-8 | 1 |
| Immune complex | LP14309-6 | 1 |
| Immune complex | Serum or Plasma | Serology - non-micro | LP403537-6 | 1 |
| Immunoglobulin light chains.free | LP29071-5 | 1 |
| Immunoglobulin light chains.free | Urine | Chemistry - non-challenge | LP384876-1 | 1 |
| Indirect antiglobulin test | LP31849-0 | 1 |
| Indirect antiglobulin test.complement specific reagent | LP14527-3 | 1 |
| Indirect antiglobulin test.complement specific reagent | Serum or Plasma | Blood bank | LP399142-1 | 1 |
| Infectious diseases | LP97560-4 | 1 |
| Infectious diseases | DBS | Chemistry - non-challenge | LP433366-4 | 1 |
| Influenza virus | XXX | Microbiology | LP444692-0 | 1 |
| Influenza virus A and B | LP36662-2 | 1 |
| Influenza virus A and B | XXX | Microbiology | LP444694-6 | 1 |
| Influenza virus A+B | LP14402-9 | 1 |
| Influenza virus B | LP14240-3 | 1 |
| Influenza virus B | XXX | Microbiology | LP378528-6 | 1 |
| Inhibin B | LP29072-3 | 1 |
| Inhibin B | Serum or Plasma | Chemistry - non-challenge | LP384783-9 | 1 |
| Initial clot growth | LP222225-7 | 1 |
| Initial clot growth | Platelet poor plasma | Coagulation | LP393998-2 | 1 |
| Inosine | Cerebral spinal fluid | Chemistry - non-challenge | LP383522-2 | 1 |
| Inosine | Serum or Plasma | Chemistry - non-challenge | LP383524-8 | 1 |
| Insulin Free | LP29075-6 | 1 |
| Insulin Free | Serum or Plasma | Chemistry - non-challenge | LP381338-5 | 1 |
| Insulin sensitivity index | LP412030-1 | 1 |
| Insulin sensitivity index | Serum or Plasma | Chemistry - non-challenge | LP416961-3 | 1 |
| Insulin-like growth factor binding protein 3 | LP15668-4 | 1 |
| Insulin-like growth factor binding protein 3 | Serum or Plasma | Chemistry - non-challenge | LP384913-2 | 1 |
| Insulin-like growth factor binding proteins | LP31742-7 | 1 |
| Interferon alpha | LP18173-2 | 1 |
| Interferon alpha | Serum or Plasma | Hematology and Cell counts | LP393785-3 | 1 |
| Interferon gamma | LP18171-6 | 1 |
| Interferon gamma | Serum or Plasma | Hematology and Cell counts | LP393788-7 | 1 |
| Interleukin 1 | LP16469-6 | 1 |
| Interleukin 1 beta | LP18509-7 | 1 |
| Interleukin 1 beta | Serum or Plasma | Chemistry - non-challenge | LP385020-5 | 1 |
| Interleukin 10 | LP21163-8 | 1 |
| Interleukin 10 | Serum or Plasma | Chemistry - non-challenge | LP385049-4 | 1 |
| Interleukin 12 | LP18174-0 | 1 |
| Interleukin 12 | Serum or Plasma | Chemistry - non-challenge | LP385051-0 | 1 |
| Interleukin 13 | LP31544-7 | 1 |
| Interleukin 13 | Serum or Plasma | Chemistry - non-challenge | LP385054-4 | 1 |
| Interleukin 17A | LP212130-1 | 1 |
| Interleukin 17A | Serum or Plasma | Chemistry - non-challenge | LP385055-1 | 1 |
| Interleukin 18 | LP31545-4 | 1 |
| Interleukin 18 | Serum or Plasma | Chemistry - non-challenge | LP385056-9 | 1 |
| Interleukin 2 | LP16470-4 | 1 |
| Interleukin 2 | Serum or Plasma | Chemistry - non-challenge | LP385023-9 | 1 |
| Interleukin 2 receptor | LP14310-4 | 1 |
| Interleukin 2 Receptor Soluble | LP17957-9 | 1 |
| Interleukin 2 Receptor Soluble | Serum or Plasma | Chemistry - non-challenge | LP385027-0 | 1 |
| Interleukin 4 | LP16472-0 | 1 |
| Interleukin 4 | Serum or Plasma | Chemistry - non-challenge | LP385034-6 | 1 |
| Interleukin 5 | LP16473-8 | 1 |
| Interleukin 5 | Serum or Plasma | Chemistry - non-challenge | LP385037-9 | 1 |
| Interleukin 6 | LP16474-6 | 1 |
| Interleukin 6 | Serum or Plasma | Chemistry - non-challenge | LP385040-3 | 1 |
| Interleukin 8 | LP30829-3 | 1 |
| Interleukin 8 | Serum or Plasma | Chemistry - non-challenge | LP385046-0 | 1 |
| Iodine | Serum or Plasma | Chemistry - non-challenge | LP385063-5 | 1 |
| Iron binding capacity | Serum or Plasma | Chemistry - non-challenge | LP385085-8 | 1 |
| Iron binding capacity.unsaturated | LP15679-1 | 1 |
| Iron binding capacity.unsaturated | Serum or Plasma | Chemistry - non-challenge | LP385086-6 | 1 |
| Irregularly contracted cells | LP14571-1 | 1 |