Order of Draw
To facilitate clinicians who conduct the drawing of blood for their patients, please refer to the chart below on the order of sample draw.
Specimen Collection Containers
Order of Draw |
Cap Colour |
Containers |
Laboratory Application |
Bottle / Tube Inversion |
1 |
Green & Orange |
Blood culture bottles (a set of two) |
Bacteriology tests (aerobic & anaerobic culture) |
8 |
2 |
Light Blue |
Sodium Citrate (fill blood sample to the mark) |
Coagulation studies |
4 |
3 |
Streck (Cell Free DNA) |
Streck 10ml |
Cell free Plasma DNA |
10 |
4 |
Red |
Clot Activator Plain, 6ml |
Most chemistry, immunological and serological tests using serum e.g. Lipids, U/E, Virology, Antibody Identification, tumour markers, hormones) |
5 |
Gold |
Clot Activator SST II, Plain (Gel), 8ml / 8.5ml |
|||
5 |
Royal Blue Plain) |
Trace Element Serum, 6ml |
Trace Elements e.g. Aluminium, Copper, Zinc. |
8 |
6 |
Green |
Lithium Heparin, 4ml |
STAT biochemistry tests e.g. Electrolytes |
8 |
7 |
Royal Blue (K2EDTA) |
Trace Element K2EDTA, 6ml |
Trace Elements e.g. Arsenic, Lead, Mercury |
8 |
Lavender |
K2 EDTA, 3ml |
Haematological tests eg. Full Blood Count, Hb Electrophoresis, HbA1C |
||
8 |
Grey |
Sodium Fluoride, 3ml |
Chemistry - Glucose |
8 |