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Table 2 Laboratories associated with the french 2020 Zilpaterol cluster

From: Sporadic worldwide “clusters” of feed driven Zilpaterol identifications in racing horses: a review and analysis

Lab Name

Lab ISO 17025 Accredited

Method Used Is LC–MS-MS in Scope

Matrix in Scope

Limit of Detection

LGC- Newmarket, UK and IHRB Analytical Laboratory

Also reference lab on France Gallop list of Approved Labs

Yes

Yes

Water

Liver

Urine

1 ppb

1 ppb

0.25 ppb

Irish Equine Centre, Co. Kildare

Yes

Yes

Urine ( Bovine)

1 ppb

DAFM, Backweston, Co Kildare

Yes

Yes

Feed

50 ppb

Independent Equine Nutrition Mildenhall, UK

Dr. Mark Dunnett

No

No

Feed

1–10 ppb as conducted

negative controls on samples

LCH Verrieres-le-Buisson, France

Yes

Yes

Urine

0.1 ppb (as reported)

NHA Laboratory

Yes

Yes

Urine

Not Reported

  1. Testing laboratories involved in the 2020 French Zilpaterol Cluster and best available estimates of Zilpaterol testing sensitivities linked to the 2020 Zilpaterol cluster, sensitivity reported as parts per billion (ppb) in urine. Irish/British racing samples were tested at the LGC laboratory and the French racing/equine samples were tested at Laboratories des Courses Hippiques, (LCH). Samples were also tested at the Irish Equine Center (IEC) laboratory, the Backweston laboratory of the Irish Department of Agriculture, Food, and the Marine (DAFM), and Independent Equine Nutrition (IEN) Laboratory, Mildenhall, UK. Best available information is that the Limit of Detection for LCH Zilpaterol urine testing was in the order of 100 pg/ml, 2.5 times more sensitive than that of LGC Newmarket