Shares in Immunodiagnostic Systems Holdings were up on the FTSE AIM 100 in morning trading, following the health company's half year results for the period ended 30 September, announced yesterday.

The group said that revenue had risen 34 per cent in the period to £22.6 million, while pre-tax profit increased 44 per cent to £6.6 million.

David Evans, Chairman of Immunodiagnostic Systems Holdings, said, "Traditionally the revenues are weighted to the second-half of the financial year and the Board sees this year as no exception. Revenues from the USA have increased by more than 60% compared to same period last year."

By 09:25 this morning shares in Immunodiagnostic Systems Holdings were up 2.06 per cent on the FTSE AIM 100 to 990.00 pence per share.

FTSE