| Test | Specimen Requirements |
| Factor Assays (Coagulation) | |
| VIII (Factor 8) | 2 x 4 mL Sodium Citrate (blue). Double spin. Separate plasma and freeze. |
| IX (Christmas Factor) | 2 x 4 mL Sodium Citrate (blue) Double spin. |
| Von Willebrands Factor (vWF)* | 2 x 4 mL Sodium Citrate (blue) Double spin. |
| Factor V Leiden | 2 x 4 mL Sodium Citrate (blue) Double spin. |
| Faecal Occult Blood - Immunological method by anti human Hb antibody | 3 consecutive days, random stool specimens |
| Faecal Occult Blood - Chemical test only | 3 consecutive days, random stool specimens |
| Faecal Reducing Sugars | Random stool specimens. Must be fresh |
| Faecal Viral Studies Rotavirus antigen | Random stool specimens. Must be fresh |
| Faeces Concentration Microscopy and examination for ova, cysts and parasites. | Random stool specimens. Must be fresh |
| Faeces Direct Microscopy Direct microscopy for ova, cysts and parasites | Random stool specimens. Must be fresh |
| Faeces Culture Micro & culture includes wet film and culture for salmonella, shigella and campylobacter | Random stool specimens. Must be fresh |
| Faeces examination for cryptosporidium | Random stool specimens. Must be fresh |
| FDP (Fibrin Degradation Products, D-dimer) | 4 mL Sodium Citrate (blue) |
| FEME | |
| Urine | 10 mL mid-stream urine |
| Faeces | Random stool specimens. Must be fresh |
| Ascitic and Other Fluids | Fluid collected aseptically |
| Joint Fluid (including crystals) | Fluid collected aseptically |
| Skin, nail etc.for fungi | Skin, Hair, Nail clippings |
| Ferritin | 10 mL GEL (white / yellow). |
| Fibrinogen | 4 mL Sodium Citrate (blue) |
| Flunitrazepam (Rohypnol)* | 50 mL Random Urine. |
| Fluoride* Serum Urine | 10 mL GEL (white / yellow). 50 mL Random Urine. |
| Flurazepam* | 10 mL GEL (white / yellow). |
| Fluroxatine (Prozac)* | 10 mL GEL (white / yellow). |
| Fetal Haemoglobin Kleihauer Test | 4 mL EDTA (purple). Blood taken from mother. |
| Folate (Folic Acid) Serum Red Cell | 10 mL GEL (white / yellow). 4ml EDTA (purple) |
| Food Handlers Screen Salmonella, Shigella and Vibrio Cholera | Fresh Faeces sample |
| Free Cortisol (Urine) | 24 hr urine collection no preservative |
| FT3 (Free Tri-Iodo Thyronine) | 10 mL GEL (white / yellow). |
| FT4 (Free Thyroxine) | 10 mL GEL (white / yellow). |
| Fresh Frozen Plasma Preparation | |
| Fructosamine* | 10 mL GEL (white / yellow), provide clinical notes |
| FSH (Follicle Stimulating Hormone) | 10 mL GEL (white / yellow). |
| FTA (Fluorescent Treponemal Antibody)* Total IgM | 10 mL GEL (white / yellow). 10 mL GEL (white / yellow). |
| Fungal Examination Skin Scrapings - micro & culture | Skin, Hair, Nail clippings. |