Infectious Disease Tests

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DLO Direct Self-Ordered Lab TestsDLO Direct™ offers tests that can help detect infectious diseases.

Hepatitis B Surface Antigen

The Hepatitis B Surface Antigen (HBsAg) with Reflex to Confirmation detects the HBsAg protein on the surface of the hepatitis B virus (HBV) during an acute or chronic HBV infection.

Hepatitis C Screen

Hepatitis C tests are used to screen for and diagnose a hepatitis C virus (HCV) infection. The HCV RNA test, Quantitative (HCV viral load) detects and measures the number of viral RNA particles in the blood. This test may be used to confirm the presence of the virus and diagnose an active infection.


The QuantiFERON® TB Gold test is a blood test for tuberculosis. Unlike a typical skin test, which requires two visits, one for the skin scratch and a second for a reading, the QuantiFERON® TB test uses a blood sample so only a single visit is needed. The skin test can also show “false positive” results.