| Test | Specimen Requirements |
| Salicylate (Aspirin)* | 10 mL GEL (white / yellow) |
| Schistosomiasis Serology (Bilharzia)* FEME only | 10 mL GEL (white / yellow). Urine or faeces |
| Scoline Sensitivity (Pseudocholinesterase)* | 10ml GEL (white / yellow). Provide anaesthetic / family history & date of birth |
| Selenium* | 10 mL LITHIUM HEPARIN (green). |
| Semen Analysis Infertility Post Vasectomy | Must reach laboratory within 2 hours (state time/date of collection/sample collected in sterile containers) Must reach laboratory within 2 hours (state time/date of collection/sample collected in sterile containers) |
| Serepax (Oxazapam)* | 10 mL GEL (white / yellow) |
| SHBG (Sex Hormone Binding Globulin) | 10 mL GEL (white / yellow). Provide clinical details. |
| Sinequan (Doxepin)* | 10 mL GEL (white / yellow). State time/date of last dose & time/date of collection. |
| Skin Scrapings Fungal Culture and microscopy | Skin, hair, nail. |
| Skin Swab Micro & culture | Swab collected into gel transport medium. |
| Smooth Muscle Antibody | 10 mL GEL (white / yellow) |
| Sodium (Na+) Serum Urine | 10 mL GEL (white / yellow) 24 hr urine collection with no additive. |
| Somatomedin C / IGF-1 | 10 mL GEL (white / yellow) |
| Specific gravity (urine) | 50 mL Random Urine |
| Sperm Antibodies* | 10 mL GEL (white / yellow). Separate serum and freeze ASAP. |
| Sputum Cytology Gram stain & culture Direct ZN Stain AFB culture | 3 x consecutive morning: specimens in sterile containers. Specimen in sterile container 3 x consecutive morning: specimens in sterile containers. Note: Please ensure specimens are sputum, not saliva. 3 x consecutive morning: specimens in sterile containers. |
| Streptococcal Antibody (ASOT) | 10 mL GEL (white / yellow) |
| Strongyloides Antibody | 10 mL GEL (white / yellow) |
| Stone Analysis (Renal)* | |
| Striated Muscle Antibody (Asthenia Gravis)* | 10 mL GEL (white / yellow) |
| Sucrose Lysis Screen for PNH | 10 mL LITHIUM HEPARIN (green). |
| Suxamethonium Screen (Pseudocholinesterase)* | 10ml GEL (white / yellow). Provide anaesthetic / family history & date of birth. |
| Synovial fluid Cells, crystal, gram stain & culture Chemistry, rheumatoid factor Cell count, gram stain & crystals | Specimen collected aseptically into sterile container Specimen collected aseptically into sterile container Specimen collected aseptically into sterile container |
| Syphilis Serology RPR/VDRL TPHA or specific T. pallidum IgG antibody Fluorescent Treponema Antibodies (Total)* Fluorescent Treponema Antibodies (IgM)* | 10 mL GEL (white / yellow) 10 mL GEL (white / yellow) 10 mL GEL (white / yellow) 10 mL GEL (white / yellow) |