FORMER Giants centre Matt Calland and Great Britain star Keiron Cunningham have been named after failing dope tests.
Calland, forced to retire after sustaining a serious eye injury during Huddersfield's Super League clash with Wigan in March, provided a urine sample which contained the banned substance nandrolone.
The 32-year-old was handed a a six-month suspended sentence which will end in December.
Giants chief executive Ralph Rimmer said: "It's a very sensitive case and the club have no comment to make on the matter."
The former Bradford ace joined the Giants from Rochdale in the close-season, and scored tries in the friendlies against Batley and Leeds.
But he managed only three senior games before sustaining the eye socket injury which ended his career prematurely.
The surgery Calland required would have ruled him out for the remainder of the season.
St Helens chief executive officer Sean McGuire insisted Cunningham will soon put his problems behind him to return to his form of old.
The hooker, who played in St Helens' last-gasp 22-18 victory over Huddersfield on Friday, was fined £2,500 and handed a one-year suspended ban after being found to have traces of hormone substance HCG in a urine sample.
Like Calland, he was not initially named, and the ban was suspended because of what were termed "mitigating circumstances".
Cunningham has struggled for form after missing the first three months of the season with an elbow injury sustained in the first Test against New Zealand last year.
McGuire said: "This matter, along with the career-threatening injury that Keiron suffered, has placed a great emotional burden on him for the last year.
"Keiron has shown immense mental and physical resolve in regaining fitness and rebuilding his rugby league career and we are confident that he will re-establish himself as one of the leading players in the world."