UnitedHealth Group Inc. on Wednesday said added costs of testing and treatment related to the recent increase in COVID-19 cases are being offset by postponements of non-urgent health care procedures, and the health insurer maintained its 2022 profit forecast. The comments should help allay investor concerns that the rise in COVID-19 infections and hospitalizations driven by the Omicron variant of the virus in recent weeks would significantly drive up medical costs for health insurers. Adding to those concerns was a Biden administration initiative requiring insurers to reimburse Americans for up to eight at-home rapid COVID-19 tests per month, while setting no limit for tests, including at-home tests, that insurers must cover if they are ordered or administered by a health care provider. UnitedHealth, however, said severity in Omicron cases is “seemingly lower” with patients staying in hospitals for shorter periods compared to last year. The costs are further offset by …