Reference intervals determined in consultation with Drs. Cathy Gartley and Tracey Chenier, Theriogenology, OVC HSC.
Do not use SST blood collection tubes for endocrinology test submission.
Hormone |
Species/status |
Reference intervals |
Comments |
Progesterone (Note conversion factor 3.18 nmol/L = 1 ng/mL) |
Canine - bitch, anestrus - spayed |
<3.0 nmol/L <1.5 nmol/L |
|
Canine - bitch in season, prior to LH surge - following LH surge |
<3-6 nmol/L
>3-6 nmol/L |
Varies in bitches relative to LH surge |
|
Canine - bitch, post-ovulation |
> 11-12 nmol/L |
Concentrations reflect those of pregnancy or pseudopregnancy. |
|
Canine - bitch, prepartum, first stage of labour |
<6.4 nmol/L |
|
|
Feline – queen, anestrus or spayed |
<1.5 nmol/L |
|
|
Feline – queen, diestrus, day 15 |
31 - 130 nmol/L |
Concentrations reflect those of pregnancy or pseudopregnancy. |
|
|
Equine – estrus/anestrus |
<3.2 nmol/L |
|
|
Equine - diestrus/pregnant |
6-65 nmol/L |
Assay in current use does not react significantly with progestins produced in latter portion of pregnancy, therefore best suited for use in early pregnancy |
|
Bovine - estrus |
<3.2 nmol/L |
|
|
Bovine - diestrus/pregnant |
>3.2 nmol/L |
|
Protein electrophoresis
Canine n = 13, feline n = 32, equine n = 15, clinically healthy adult animals; bovine n = 28, mid-lactation Holstein cows.