| 16634-8 | Coccidioides immitis Ab (CSF) | MICRO |
| 16635-5 | Coccidioides immitis IgA Ab (immunoassay) | MICRO |
| 16636-3 | Coccidioides immitis IgA Ab (CSF) | MICRO |
| 16637-1 | Coccidioides immitis IgE Ab | ALLERGY |
| 16638-9 | Coccidioides immitis IgG Ab (CSF) | MICRO |
| 16639-7 | Coccidioides immitis IgM Ab (CSF) | MICRO |
| 1664-2 | 17-Hydroxycorticosteroids (Amniotic Fluid) | CHEM |
| 16640-5 | Coccidioides reaction wheal | CHALSKIN |
| 16641-3 | Cockatiel droppings Ab | ALLERGY |
| 16642-1 | Cockatiel droppings IgG Ab | ALLERGY |
| 16643-9 | Cockatoo droppings Ab | ALLERGY |
| 16644-7 | Codeine Free (qualitative, confirmatory method) | DRUG/TOX |
| 16645-4 | Colistin | DRUG/TOX |
| 16647-0 | Collagen Ab | SERO |
| 16648-8 | Copper (Body Fluid) | DRUG/TOX |
| 16649-6 | Coproporphyrinogen oxidase (Red Blood Cells) | CHEM |
| 1665-9 | 17-Hydroxycorticosteroids | CHEM |
| 16650-4 | Cilantro IgE Ab | ALLERGY |
| 16651-2 | Corticosterone --post XXX challenge | CHAL |
| 16652-0 | Corticotropin (Amniotic Fluid, radioimmunoassay (ria)) | CHEM |
| 16653-8 | Corticotropin Canine | CHEM |
| 16654-6 | Corticotropin (radioimmunoassay (ria) --1.5 hours post xxx challenge) | CHAL |
| 16655-3 | Corticotropin (radioimmunoassay (ria) --10 minutes post xxx challenge) | CHAL |
| 16656-1 | Corticotropin (radioimmunoassay (ria) --15 minutes post xxx challenge) | CHAL |
| 16657-9 | Corticotropin (radioimmunoassay (ria) --1 hour post xxx challenge) | CHAL |
| 16658-7 | Corticotropin (radioimmunoassay (ria) --1 minute post xxx challenge) | CHAL |
| 16659-5 | Corticotropin (radioimmunoassay (ria) --2.5 hours post xxx challenge) | CHAL |
| 1666-7 | 17-Hydroxycorticosteroids (Urine) | CHEM |
| 16660-3 | Corticotropin (radioimmunoassay (ria) --20 minutes post xxx challenge) | CHAL |
| 16661-1 | Corticotropin (radioimmunoassay (ria) --2 hours post xxx challenge) | CHAL |
| 16662-9 | Corticotropin (radioimmunoassay (ria) --30 minutes post xxx challenge) | CHAL |
| 16663-7 | Corticotropin (radioimmunoassay (ria) --3 hours post xxx challenge) | CHAL |
| 16664-5 | Corticotropin (radioimmunoassay (ria) --45 minutes post xxx challenge) | CHAL |
| 16665-2 | Corticotropin (radioimmunoassay (ria) --5 minutes post xxx challenge) | CHAL |
| 16666-0 | Corticotropin --9th specimen post XXX challenge | CHAL |
| 16667-8 | Cortisol Free in 48 hour Urine | CHEM |
| 16668-6 | Cortisol Free in 72 hour Urine | CHEM |
| 16669-4 | Cortisol --10 minutes post XXX challenge | CHAL |
| 1667-5 | 17-Hydroxyketosteroids (Urine) | CHEM |
| 16670-2 | Cortisol --15 minutes post XXX challenge | CHAL |
| 16671-0 | Cortisol --1 minute post XXX challenge | CHAL |
| 16672-8 | Cortisol --40 minutes post XXX challenge | CHAL |
| 16673-6 | Cortisol --50 minutes post XXX challenge | CHAL |
| 16674-4 | Cortisol --70 minutes post XXX challenge | CHAL |
| 16675-1 | Cortisol --80 minutes post XXX challenge | CHAL |
| 16676-9 | Corynebacterium diphtheriae in Specimen (qualitative, organism specific culture) | MICRO |
| 16677-7 | Coxiella burnetii IgG Ab | MICRO |
| 16678-5 | Coxiella burnetii IgM Ab | MICRO |
| 16679-3 | Coxsackievirus A Ab | MICRO |
| 1668-3 | 17-Hydroxyprogesterone | CHEM |