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SAMPLE COLLECTION
Proper specimen collection is crucial to ensure the accuracy of test results.
For a detailed guide on the appropriate methods for the collection of all types of specimen, please view the Specimen Collection & Handling section of our Service Catalogue. The instructions contained therein are clear and easy to follow.
Request forms must include the following information:
- Full name of patient
- Patient’s identification number (NRIC/passport no.)
- Date of birth
- Sex
- Source of specimen (if not blood)
- Initial/signature of requesting doctor
- Date and time of collection
- Name of the patient’s attending doctor/consultant
- Other relevant information, e.g. I.V. drugs administered
On the request form, please indicate clearly what test(s) is/are required so that specimen(s) can be processed promptly.
Specimen Collection Containers
Speciment Collection Hotline: 6277-0221 / 6277-0222
Order of Draw
| Closure Colour | Collection Tube | Determinations | Mix by Inverting |
 | Citrate Tube | PT, APTT, Lupus Anticoagulant, Anti-thrombin III, Protein S & C, Fibrinogen, Factor Assay, HLA B27 | 3 to 4 |
 | BD Vacutainer® SST™ Gel Separator Tub | Biochemistry, Virology, Immunology, Vit B12, Folate, Anticonvulsant Drug Monitoring, Therapeutic Drug Monitoring (TDM) & other investigations that require serum (i.e. plain blood | 5 |
 | Serum Tube | Cold Agglutinins, Abnormal Blood Group Antibody Screen, Antibody Identifcation & Vitamin D2 & D3 (HPLC) | 5 |
 | Trace Element Tube | Zinc, Copper, Aluminum, Manganese, Selenium | 8 to 10 |
 | BD Vacutainer® PST™ Gel Separator Tube With Hepari | STAT Biochemistry, Plasma, Ammonia (in ice-pack), CD34, Blood, Alcohol, Toxicological Tests, Chromosomes Studies, Electrolytes, Renal Function Tests | 8 to 10 |
 | Heparin Tube | STAT Biochemistry, Plasma, Ammonia (in ice-pack), CD34, Blood, Alcohol, Toxicological Tests, Chromosomes Studies, Electrolytes, Renal Function Tests, TB Spot | 8 to 10 |
 | Trace Metal K2EDTA Tube | Arsenic, Cadmium, Chromium, Mercury, Lead, Manganeseia Screening, CD4/CD8, Factor V Leiden | 8 to 10 |
 | K2EDTA Tube | FBC, PBF, MP, ESR, HBA1c, Cyclosporine A, G6PD, RBC Cholinesterase, ACTH, Renin, HB Electrophoresis, Thalassemia Screening, CD4/CD8, Factor V Leiden | 8 to 10 |
 | Fluoride (glucose) Tube | Glucose, Lactic Acid (in ice-pack) | 8 to 10 |
* Blood culture bottles to be drawn (if required) before blood tubes
* Trace Element: If using serum trace Element tube with clot activator please collect after serum tubes
* Use 2 identifiers for patient identification
* Maximum tourniquet time: not more than one minute
* Sites to avoid taking blood: fistula arm, mastectomy site, IV drip or burn sites
* Always wear a new pair of gloves
Clinical Laboratory Standards Institute CLSI Sixth Edition, Reference to GP41-A6, Vol.27, No.26