TRH Stimulation Test dog, extended (2 x T4 + 2 x TSH)

LABOKLIN Service ID: 2277

Diagnosis

Hypothyroidism

Material

3 x serum each 1 ml

Execution

  • First blood collection = baseline value
  • Injection of Thyroliberin® i.v. (100 µg up to 3 kg bdw, 200 µg with a bdw > 3 kg)
  • Second sample 20 min post injection
  • Third sample 4 hours post injection = stimulation value

Parameter

  • T4 (samples 1 and 3)
  • TSH (samples 1 and 2)

Species list

Dog

Duration

1 day

Assessment

  • Euthyroidt: elevation of T4 concentration by at least 0.5 µg/dl to at least 2.5 µg/dl
  • Questionable: elevation of T4 concentration by less than 0.5 µg/dl to > 2.5 µg/dl or by more than 0.5 µg/dl but to < 2.5 µg/dl
  • The stimulation value is of limited significance if there is no TSH rise after 20 min.