Protocol of the VICTORIA study: personalized vitamin D supplementation for reducing or preventing fatigue and enhancing quality of life of patients with colorectal tumor - randomized intervention trial

Table 4 Time and volume of sampling

Setting	No. of sample	Phase of clinical trial	Blood Sampling		Urine Sampling
Setting	No. of sample	Phase of clinical trial	EDTA tube	Serum tube	Urine Sampling
Inpatient	1	Screening	1 × 2.6 ml	1 × 7.5 ml	1 × 10 ml
Inpatient	2	Day 12 to 21	1 × 2.6 ml	4 × 7.5 ml	2 × 10 ml
Outpatient	3	Week 13 to 16	1 × 2.6 ml	1 × 7.5 ml, 3 × 9 ml	2 × 10 ml

ISSN: 1471-2407