Tube Cap Colour	Tube Type	Related Test	Remarks
	EDTA 2.7 or 3 ml	Full Blood Count, ESR, RBC Folate, HbAlc, Sickle Cell (Hb Electrophoresis), Cyclosporin, Tacrolimus, PTH Transfusion: Group and Screen: Lymphocyte Markers, CD4 Microbiology: Viral & Bacterial PCR viral load	Mix by inversion 3 to 4 times
	Sodium Citrate 2.7 or 3 ml	D-Dimer, APTT, INR, coagulation studies	Fill to frosted minimum fill line. Mix by inversion 8 to 10 times
	Serum	Sodium, Potassium, Urea, Creatinine, Chloride, Bicarbonate, CRP, Bilirubin, ALT, ALP, GGT, Total Protein, Albumin, Calcium, Phosphate, Magnesium, CK, Urate, Amylase, Cholesterol, Triglyceride, Paracetamol, Salicylate, Anticonvulsants, Digoxin, Ethanol, TSH, fT4, fT3. Troponin, FSH, LH, Testosterone, Oestradiol, Progesterone, Prolactin, Cortisol, Growth Hormone, IGF1, Tumour Markers, Iron Studies, Ferritin, B12, Folate, EP0, Haptoglobin, Glandular Fever	Mix by inversion 5 to 6 times
	Fluoride Oxalate 2.7 or 3 ml	Glucose, Lactate	Mix by inversion 8 to 10 times

For other tests not mentioned in this guide, please call the laboratory

NOTE: BD tubes require immediate mixing following collection. Insufficient mixing can result in inaccurate test results and the need to re-draw. The correct mixing technique is to gently invert each tube the recommended number of times shown above.