The 10 MPs have been instructed to appear for PCR tests, parliament sources said.
Serjeant-at-Arms of Parliament Narendra Fernando said that all MPs would be subjected to PCR tests on Jan 13 and 15.
MP Gayantha Karunathilaka and his family had tested negative for COVID-19, Narendra Fernando said.
Narendra Fernando said MP Karunathilaka had been identified as a close associate of MP Rauff Hakeem, who recently tested positive for the highly contagious virus.
Karunathilaka is reported to have attended Parliament on Jan 05 together with Hakeem.
Narendra Fernando said upon being notified, MP Karunathilaka had volunteered undergo PCR tests.
He said the test results had confirmed that the MP and his family had not contracted the virus.