David Vandyke and Arabian Gold at his Warwick Farm Stables last year.David Vandyke and Arabian Gold at his Warwick Farm Stables last year. Photo: Andy Zakeli

Randwick Equine Centre staff conceded they failed to see a vital swab holding time warning issued more than six months earlier after Racing NSW stewards slugged trainer David Vandyke with a hefty $12,000 fine for a positive sample one of his horses returned to a respiratory drug in April.

Vandyke escaped suspension after fronting stewards over a positive one of his former runners, two-year-old Queen Tara, returned to Ipratropium after she ran second when on debut in a Wyong maiden on April 30.