Bhambwani told CNBC-TV18, "One sees a sign of recovery in Ranbaxy Lab and a sustainable recovery will actually be confirmed after the stock starts trading above Rs 445-450 with heavier volume and increase commitment of traders. At this point in time Rs 325-335 is a support base below which if the stock starts to trade constantly with heavier volumes I think it could signal another phase of either decline or consolidation or linear movement."