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 |

