| Auer rods | Blood | Hematology and Cell counts | LP393451-2 | 1 |
| Background stain | LP19276-2 | 1 |
| Background stain | Blood | Hematology and Cell counts | LP393371-2 | 1 |
| Bacteria | Abscess | Microbiology | LP442038-8 | 1 |
| Bacteria | Blood | Microbiology | LP442044-6 | 1 |
| Bacteria | Bone marrow | Microbiology | LP442047-9 | 1 |
| Bacteria | Bronchoalveolar lavage | Microbiology | LP418667-4 | 1 |
| Bacteria | Catheter tip | Microbiology | LP442055-2 | 1 |
| Bacteria | Cerebral spinal fluid | Microbiology | LP373671-9 | 1 |
| Bacteria | Dialysis fluid | Microbiology | LP442056-0 | 1 |
| Bacteria | Ear | Microbiology | LP442060-2 | 1 |
| Bacteria | Eye | Microbiology | LP373673-5 | 1 |
| Bacteria | Genital | Microbiology | LP373674-3 | 1 |
| Bacteria | Isolate | Microbiology | LP442065-1 | 1 |
| Bacteria | Nose | Microbiology | LP373676-8 | 1 |
| Bacteria | Peritoneal fluid | Microbiology | LP373678-4 | 1 |
| Bacteria | Stool | Microbiology | LP373680-0 | 1 |
| Bacteria | Synovial fluid | Microbiology | LP373681-8 | 1 |
| Bacteria | Urine | Microbiology | LP433186-6 | 1 |
| Bacteria | Wound | Microbiology | LP442090-9 | 1 |
| Bacteria | Wound deep | Microbiology | LP442091-7 | 1 |
| Bacterial sialidase | LP35815-7 | 1 |
| Bacterial sialidase | XXX | Microbiology | LP379726-5 | 1 |
| Band 3 | LP429619-2 | 1 |
| Band 3 | Red Blood Cells | Hematology and Cell counts | LP429640-8 | 1 |
| Barbiturates | Serum, Plasma or Blood | Drug toxicology | LP390633-8 | 1 |
| Base deficit | Blood | Chemistry - non-challenge | LP383296-3 | 1 |
| Base deficit | Blood arterial | Chemistry - non-challenge | LP383297-1 | 1 |
| Base deficit | Blood capillary | Chemistry - non-challenge | LP383298-9 | 1 |
| Base deficit | Blood central venous | Chemistry - non-challenge | LP426939-7 | 1 |
| Base deficit | Blood cord arterial | Chemistry - non-challenge | LP383300-3 | 1 |
| Base deficit | Blood cord venous | Chemistry - non-challenge | LP383301-1 | 1 |
| Base deficit | Blood mixed venous | Chemistry - non-challenge | LP383302-9 | 1 |
| Base deficit | Blood venous | Chemistry - non-challenge | LP383303-7 | 1 |
| Base excess | Blood | Chemistry - non-challenge | LP383304-5 | 1 |
| Base excess | Blood arterial | Chemistry - non-challenge | LP383305-2 | 1 |
| Base excess | Blood capillary | Chemistry - non-challenge | LP383306-0 | 1 |
| Base excess | Blood cord arterial | Chemistry - non-challenge | LP383308-6 | 1 |
| Base excess | Blood cord venous | Chemistry - non-challenge | LP383309-4 | 1 |
| Base excess | Blood mixed venous | Chemistry - non-challenge | LP383310-2 | 1 |
| Base excess | Blood venous | Chemistry - non-challenge | LP383311-0 | 1 |
| Base excess | Extracellular fluid | Chemistry - non-challenge | LP383312-8 | 1 |
| Basophilic stippling | LP17278-0 | 1 |
| Basophilic stippling | Blood | Hematology and Cell counts | LP393384-5 | 1 |
| Benzodiazepines | Serum or Plasma | Drug toxicology | LP391608-9 | 1 |
| Benzoylecgonine | Meconium | Drug toxicology | LP389697-6 | 1 |
| Beta alanine | Amniotic fluid | Chemistry - non-challenge | LP383673-3 | 1 |
| Beta alanine | Cerebral spinal fluid | Chemistry - non-challenge | LP383676-6 | 1 |
| Beta alanine | Serum or Plasma | Chemistry - non-challenge | LP383677-4 | 1 |
| Beta aminoisobutyrate | Amniotic fluid | Chemistry - non-challenge | LP383757-4 | 1 |
| Beta aminoisobutyrate | Cerebral spinal fluid | Chemistry - non-challenge | LP383760-8 | 1 |
| Beta aminoisobutyrate | Serum or Plasma | Chemistry - non-challenge | LP383762-4 | 1 |
| Beta galactosidase | Small intestine Tissue | Chemistry - non-challenge | LP382855-7 | 1 |
| Beta galactosidase | White blood cells | Chemistry - non-challenge | LP382856-5 | 1 |
| Beta globulin | Body fluid | Chemistry - non-challenge | LP384670-8 | 1 |
| Beta glucuronidase | LP14019-1 | 1 |
| Beta glucuronidase | White blood cells | Chemistry - non-challenge | LP385296-1 | 1 |
| Beta hydroxybutyrate | Urine | Chemistry - non-challenge | LP382333-5 | 1 |
| Beta lactamase organism | LP19448-7 | 1 |
| Beta lactamase organism | Isolate | Microbiology | LP444458-6 | 1 |
| Beta sitosterol | LP173720-6 | 1 |
| Beta sitosterol | Serum or Plasma | Chemistry - non-challenge | LP382382-2 | 1 |
| Beta-2 transferrin | Cerebral spinal fluid | Chemistry - non-challenge | LP384736-7 | 1 |
| Beta-2 transferrin | Serum | Chemistry - non-challenge | LP384737-5 | 1 |
| Beta-2-Microglobulin | LP14907-7 | 1 |
| Beta-2-Microglobulin | Serum or Plasma | Chemistry - non-challenge | LP384701-1 | 1 |
| Beta-N-acetylhexosaminidase | Serum or Plasma | Chemistry - non-challenge | LP385716-8 | 1 |
| Beta-N-acetylhexosaminidase | White blood cells | Chemistry - non-challenge | LP385718-4 | 1 |
| Bicarbonate | Blood | Chemistry - non-challenge | LP386552-6 | 1 |
| Bicarbonate | Blood arterial | Chemistry - non-challenge | LP386553-4 | 1 |
| Bicarbonate | Blood capillary | Chemistry - non-challenge | LP386554-2 | 1 |
| Bicarbonate | Blood cord arterial | Chemistry - non-challenge | LP386556-7 | 1 |
| Bicarbonate | Blood cord venous | Chemistry - non-challenge | LP386557-5 | 1 |
| Bicarbonate | Blood mixed venous | Chemistry - non-challenge | LP386558-3 | 1 |
| Bicarbonate | Blood venous | Chemistry - non-challenge | LP386559-1 | 1 |
| Bicarbonate | Body fluid | Chemistry - non-challenge | LP386560-9 | 1 |
| Bicarbonate | Serum or Plasma | Chemistry - non-challenge | LP386569-0 | 1 |
| Bile acid | Serum or Plasma | Chemistry - non-challenge | LP385249-0 | 1 |
| Bile acid pattern | LP30845-9 | 1 |
| Bile acid pattern | Serum or Plasma | Chemistry - non-challenge | LP385252-4 | 1 |
| Bile acid.dihydroxy | LP18908-1 | 1 |
| Bile acid.dihydroxy | Serum or Plasma | Chemistry - non-challenge | LP412166-3 | 1 |
| Bile acid.trihydroxy | LP18909-9 | 1 |
| Bile acid.trihydroxy | Serum or Plasma | Chemistry - non-challenge | LP385256-5 | 1 |
| Bile alcohols | LP203974-3 | 1 |
| Bile alcohols | Urine | Chemistry - non-challenge | LP385266-4 | 1 |
| Bilirubin | Body fluid | Chemistry - non-challenge | LP385276-3 | 1 |
| Bilirubin excess | LP157150-6 | 1 |
| Bilirubin excess | Serum and CSF | Chemistry - non-challenge | LP385299-5 | 1 |
| Bilirubin.glucuronidated+Bilirubin.albumin bound | LP15445-7 | 1 |
| Bilirubin.glucuronidated+Bilirubin.albumin bound | Serum or Plasma | Chemistry - non-challenge | LP385310-0 | 1 |
| Biopsy | LP68311-7 | 1 |
| Biopterin | Cerebral spinal fluid | Chemistry - non-challenge | LP384303-6 | 1 |
| Biopterin | Serum or Plasma | Chemistry - non-challenge | LP384304-4 | 1 |
| Biotinidase | Normal control | Chemistry - non-challenge | LP385741-6 | 1 |
| Biotinidase | Normal control | Serum or Plasma | Chemistry - non-challenge | LP385740-8 | 1 |
| Biotinidase | Serum or Plasma | Chemistry - non-challenge | LP385739-0 | 1 |
| Biotinidase deficiency | LP56771-6 | 1 |
| Biotinidase deficiency | DBS | Chemistry - non-challenge | LP385900-8 | 1 |
| Bisphosphoglycerate mutase | LP157537-4 | 1 |