Labrador Retriever Health Testing Requirements for Stud Dogs

Labrador Retrievers are one of the most carefully health-tested breeds, and for good reason — they carry significant genetic predispositions to hip dysplasia, elbow dysplasia, and several inherited diseases.

The Labrador Retriever Club (LRC) has one of the most rigorous CHIC programs of any breed. Any responsible Labrador stud dog should be fully tested before being used in breeding.

CHIC Requirements for Labrador Retrievers

Current CHIC requirements for Labrador Retrievers include:

• OFA or PennHIP Hip Evaluation — hip dysplasia is the most prevalent inherited orthopedic condition in Labs
• OFA Elbow Evaluation — elbow dysplasia is extremely common
• OFA Eye Examination (CAER) — hereditary eye conditions including PRA
• DNA test for Exercise-Induced Collapse (EIC) — a genetic neuromuscular condition
• DNA test for prcd-PRA — the most common form of progressive retinal atrophy in Labs
• DNA test for Centronuclear Myopathy (CNM) — a severe inherited muscle disease

Hip and Elbow Evaluations in Detail

OFA Hip Evaluation OFA grades Labrador hips as Excellent, Good, Fair (all passing), Borderline, Mild, Moderate, or Severe. For stud dogs, the minimum standard for most serious breeders is OFA Good or better. OFA Excellent hips are strongly preferred.

PennHIP PennHIP measures hip laxity using a distraction radiograph technique. It produces a Distraction Index (DI) — a lower number indicates tighter hips. PennHIP can be performed at 16 weeks, making it useful for earlier evaluation. For Labs, the breed median DI is approximately 0.46; stud dogs should ideally fall well below the breed median.

OFA Elbow Evaluation Elbow dysplasia in Labs encompasses several conditions: Osteochondrosis Dissecans (OCD), Fragmented Coronoid Process (FCP), and Ununited Anconeal Process (UAP). OFA grades elbows Normal, Grade I, II, or III. Only Normal-graded elbows are acceptable for serious breeding programs.

DNA Health Tests

Exercise-Induced Collapse (EIC) EIC is an autosomal recessive condition causing muscle weakness and collapse after intense exercise. Carrier dogs are healthy and can be bred to Clear dogs safely. At-Risk (affected) dogs should not be used for strenuous work and careful breeding decisions are required.

prcd-PRA (Progressive Rod-Cone Degeneration) The most common form of PRA in Labs. Autosomal recessive. Carriers are unaffected. Breeding Carrier × Clear is safe; never breed two Carriers.

Centronuclear Myopathy (CNM) A severe inherited muscle disease causing generalized muscle weakness from puppyhood. Autosomal recessive. Carriers are healthy. Breeding Carrier × Clear produces no affected puppies.

Additional Recommended DNA Tests:

• Degenerative Myelopathy (DM/SOD1) — late-onset progressive paralysis
• Hereditary Nasal Parakeratosis (HNPK) — causes crusty nasal lesions in yellow Labs
• Skeletal Dysplasia 2 (SD2) — causes disproportionate dwarfism
• Cystinuria Type I-A — causes kidney and bladder stones (less common in Labs but tested)

Color and Coat Genetics

Labrador coat color is governed primarily by the B locus (black/chocolate) and E locus (yellow). The "silver" Labrador controversy involves dilution (D locus/dd), which is not recognized by the LRC or AKC as a standard Labrador color.

Summary

A responsible Labrador stud dog should have: OFA Good or Excellent hips (or equivalent PennHIP score below breed median), OFA Normal elbows, current CAER eye exam, and DNA Clear or Carrier status on EIC, prcd-PRA, and CNM — with Carrier dogs only bred to Clear dams. Additional testing for DM, HNPK, and SD2 reflects current best practice. Elbows and hips together are the leading cause of orthopedic suffering in the breed; these evaluations are non-negotiable.