Laboratory Investigations
| Test Name | Requirements |
| Barbiturates (Drugs) | Spot Urine – 10 – 20 ml |
| Bence Jones Protein | 10 – 20 ml Urine |
| Benzodiazipine (Drugs) | 10 – 20 ml Urine |
| BNP B-type Natriuretic Peptide | 3ml Blood in EDTA tube |
| B-HCG (Beta HCG) | Clot or serum 3-4 ml |
| Bile Salts | 10 -20 ml Urine |
| Bile Pigments | 10 -20 ml Urine |
| Bilirubin ( Total , Direct, Indirect ) | Clot or serum 3-4 ml |
| Bilirubin (Total) | Clot or serum 3-4 ml |
| Bilirubin (Direct) | Clot or serum 3-4 ml |
| Bilirubin (Indirect) | Clot or serum 3-4 ml |
| Biopsy (Large) | Specimen & Microscopy |
| Biopsy (Small) | Specimen & Microscopy |
| BT (Bleeding Time) | Perform in Lab |
| BT & CT | Perform in Lab |
| Blood Group | 3 cc EDTA Blood |
| Blood Gases / ABGs | Clot or serum 3-4 ml |
| Blood Cross Match | Clot or serum 3-4 ml |
| Blood Sugar Fasting (BSF) | Sodium Flouride Tube (Grey Top) |
| Blood Sugar Random (BSR) | Sodium Flouride Tube (Grey Top) |
| Blood Sugar (2hrs. P.P) | Sodium Flouride Tube (Grey Top) |
| Blood Sugar (1hrs. P.P) | Sodium Flouride Tube (Grey Top) |
| Bone Marrow Trephine (Biopsy) | Perform in Lab |
| Bone Marrow Aspiration | Perform in Lab |
| Brucella Antibody | Clot or serum 3-4 ml |
| BUN (Blood Urea Nitrogen) | Clot or serum 3-4 ml |
| Bicarbonate (HCO3) | Clot or serum 3-4 ml |