Retina and Choroid Biopsy

Special Instructions: Please contact Dr. Chevez-Barrios in advance of biopsy to assure the specimen is going to be received and handled immediately.

Dr. Chevez-Barrios
Tel: 713-441-6484

Transport Media

Flow cytometry (rule out lymphoma), send fresh tissue in a minimum amount of RPMI (just enough to cover the tissue).

Cultures and/or PCR studies, send fresh tissue in a minimum amount of sterile PBS (just enough to cover the tissue).

Standard studies (histologic examination, special stains, immunohistochemistry) or malignancy other than lymphoma, submission in 10% formalin is sufficient.

You may need to divide your specimen into multiple containers with the appropriate media. Sample label for each container:

Patient’s name (Last name, First name)
Patient’s date of birth
Hospital or clinic identification number
Specimen type (“retina” or “choroid”)
Specimen site (right/left eye)

Test Request Form

Please download and fill out an HMDL Ophthalmic Surgical Pathology Form. Place the closed syringe and test request form in a sealed specimen bag. Please be sure to provide a detailed history and any specific questions to be answered.


Pack the sample(s) with test request form in ice or include ice pack.
Send overnight by FedEx or other courier with sample tracking.

Shipping Address

Houston Methodist Diagnostic Laboratories
Central Specimen Receiving
6565 Fannin St., Dunn Tower
Second Floor, D2-109
Houston, TX 77030
Tel: 713-441-1854 

Contact information: Laboratory Client Services
Hours: Monday – Friday 7:00 AM – 6:00 PM (CST)
Phone: (713) 441-4411 or 1 (855) 522-3282 (LABDATA)
Fax: (713) 441-4412