New directions in childhood obesity research: how a comprehensive biorepository will allow better prediction of outcomes

Table 2 COBRA Biobank sample collection.

		Biospecimen fractions & number/volume of stored aliquots
Participant age	Type of collection tube	Guthrie cards	Peripheral whole blood	Plasma	Lymph-ocytes	Granulo-cytes	Sera
> = 3 years	EDTA	4 × 0.1 ml		2 × 1 ml	3 × 1 ml	2 × 1 ml
	SG						6 × 0.5 ml
	LH		4 × 1 ml	4 × 0.5 ml
	Citrate			4 × 0.25 ml
< 3 years	EDTA	4 × 0.1 ml			2 × 1 ml	2 × 1 ml
	SG						4 × 0.5 ml
	LH		2 × 1 ml	2 × 0.5 ml
	Citrate			3 × 0.25 ml

Number of samples × volume collection. ml = millilitre(s). EDTA = EthyleneDiamineTetraAcetic acid tube. SG = Serum Gel tube. LH = Lithium Heparin tube.

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