Method of performing two or more laboratory tests with a small volume bodily fluid sample from a subject comprising obtaining at a sample collection site at least a first vessel and a second vessel, wherein the total volume of the small volume bodily fluid sample obtained from the subject is no greater than 400 microliters, transporting the vessels to a sample receiving site, generating a first vessel dilution sample from the first vessel original sample, wherein the first vessel dilution sample: i) is diluted at least 3-fold as compared to the first vessel original sample, and ii) has a total volume of no more than 1000 microliters, and transferring a portion of the first vessel dilution sample into a first assay unit and a portion of the portion of the bodily fluid sample in the second vessel into a second assay unit, wherein a first laboratory test occurs in the first assay unit and a second laboratory test occurs in the second assay unit.
