Blue Egg Gene Test

The Blue Egg Gene Test helps breeders identify whether a bird carries the Oocyan (O) allele, the genetic factor associated with blue or blue-green eggshell pigmentation.

This test is designed for breeders who want more precise genetic information when planning pairings, confirming blue egg genetics, or understanding whether a bird may pass the blue egg trait to future offspring.

The blue egg trait is associated with an autosomal dominant allele, meaning that a single copy of the gene may be enough for the trait to be expressed. Birds carrying the O allele may produce blue or green eggs, depending on the presence of other genes that also influence eggshell color.

Possible Results

• O/O – Homozygous Blue
• O/o – Heterozygous Blue
• o/o – Non-Blue Egg Layer

This Test May Help Confirm

• The presence or absence of the Oocyan (O) allele
• Whether a bird carries one or two copies of the allele
• Genetic support for blue or green eggshell color
• Breeding decisions related to blue egg traits

This Test Does Not Confirm

• Brown eggshell genes
• The exact shade of the egg, including blue, green, olive, or tinted variations
• Bloom, speckling, or cuticle thickness traits
• Other eggshell color modifiers unrelated to the Oocyan allele

After purchasing the test, customers must enter their sample information through the Customer Portal, create a batch, generate a Batch Slip, label each sample, and mail the samples to the laboratory. Once testing is complete, results will be available through the customer dashboard.

Sample Type

A dried blood sample collected on the tip of a clean coffee filter or on a small piece of plain printer paper is recommended.

Please visit our Sample Collection page for step-by-step instructions before mailing your samples.

Turnaround Time

Testing begins after the samples are received and logged by the laboratory.

Customers will receive updates through the Customer Portal and/or by email when the samples are received and when the results are ready.