Elmi Laboratories

Tube Cap
Tube TypeRelated TestRemarks
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 studiesFill to frosted
minimum fill line.
Mix by inversion 8
to 10 times
SerumSodium, 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
Mix by inversion 5
to 6 times
Fluoride Oxalate
2.7 or 3 ml
Glucose, LactateMix 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.

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