As far as I know, just nasal and back of throat swabs.
'From February 1 to 14, 2020, among all the 73 SARS-CoV-2-infected hospitalized patients, 39 (53.42%) including 25 males and 14 females tested positive for SARS-CoV-2 RNA in stool as shown in Supplementary Table 1. The age of patients with positive SARS-CoV-2 RNA in stool ranged from 10 months to 78 years old. Duration time of positive stool ranged from 1 to 12 days. Furthermore, 17 (23.29%) patients remained positive in stool after showing negative in respiratory samples'
https://www.gastrojournal.org/article/S0016-5085(20)30282-1/fulltext