Sentence examples for blood samples were required from inspiring English sources

The hospital-based design of the study was chosen since case and control blood samples were required.

The blood samples were required to be received at the study center and frozen within 3 days after blood draw.

Older boys were chosen for study because blood samples were required and participation rates were expected to be higher than among younger children.

Blood samples were required by protocol to be collected at baseline and specific post-dosing times during the study from the first 98 subjects to measure IV ibuprofen pharmacokinetics.

All data collection, including anthropometric measurements and blood taking procedures, were completed in the schools between 07 30 and 08 30 before their first school lesson as fasting blood samples were required.

In brief, all blood samples were required to be transported within 12 hours of collection, all plasma samples were required to be extracted and stored at −20°C within 12 hours of arrival, and all tests were required to be conducted at laboratories certified by the National Center for AIDS/STD Control and Prevention (NCAIDS).

While the current protocols that use peripheral blood samples may provide abundant data, a range of distinct components of whole blood samples are required and the different anticoagulant systems employed may impair some properties of the biological sample and interfere with functional assays.

Forearm testing further increases the readiness for testing, particularly when frequent blood samples are required.

As a result, blood samples are required less frequently, which in turn, contributes to a lighter workload for nursing staff and lower operational costs.

No parental blood samples are required for study participation.

i) For DNA extraction, 2 × 5 ml EDTA blood samples are required.