Theoretically I could, but I won't, because I would risk providing unrepresentative result.
Suspensions require special instructions on the customer side - as suspensions are not homogenous by default, the chance that my customers would take sample that is not representative (part of the liquid with higher or lower amount of suspended particles than the true average value) is quite high in my experience.
Therefore, for suspensions I require either whole container (amp. or vial) to be sent, or small aliquot (part) be taken under specified conditions.