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LipoScience (LPDX) fell to a one-year low on Friday after the diagnostics technology company decreased its first-quarter guidance to less than analysts' estimates after it ended its contract with Health Diagnostic Laboratory. The company reduced its guidance to $11.8 million from $12.2 million, which is less than the Capital IQ consensus estimate of $12.24 million. LipoScience decided to terminate the contract once Health Diagnostic Laboratory introduced its own test to measure low density lipoprotein particles.