The invention relates to a method for enriching and examining microbiological samples. In which method microbes are brought into a syringe or equivalent. In a method according to the invention the enrichment culture of microbes is accomplished inside a syringe or equivalent. An apparatus according to the invention comprises a syringe or equivalent and into the syringe or the plunger (3) of the syringe a lead-through is manufactured in order to conduct gas or gas mixture to or from the syringe.