Of the samples sent for testing, 278 tested negative while reports of the rest were awaited, Additional Chief Secretary (Health) R D Dhiman said.
The highest 119 samples were taken from Hamirpur, followed by Shimla (79), Solan (72), Kangra (51), Una (42), Mandi (40), Bilaspur (15), , Chamba (14), Sirmaur (11), Kullu (9), Lahaul-Spiti (5) and Kinnaur (2), he added.
These tests are being conducted at Tanda's Dr Rajendra Prasad Government Medical College (RPGMC); Indira Gandhi Medical College (IGMC), Shimla; and Central Research Institute (CRI) in Solan.
So far 40 coronavirus cases have been reported in the state.
The number of active cases rose from 22 to 23 as a cured patient retested positive for coronavirus on Saturday.
While 11 of 40 confirmed cases have recovered, two COVID-19 patients died.
The fatalities include a 70-year-old Delhi resident who had stayed at a factory's guest house in Solan's Baddi and died at the Chandigarh's PGIMER on April 2.
Four patients were shifted to a private hospital outside Himachal Pradesh on their request. DJI CK