UCSD Cystine Determination Laboratory

Contacts ;listed here.

CystagonTM Monitoring

Monitoring by White Blood Cells (Leukocytes)

Reminder: Blood must be taken 5-6 hours after a dose of CystagonTM
and processed immediately for the white cell cystine
measurements to be meaningful.

Diagnosis for Cystinosis

Diagnosis by White Blood Cells (Leukocytes)
Diagnosis by Skin Fibroblasts
Diagnosis by Placenta
Prenatal Diagnosis by Amniocytes & Chorionic Villi - Contact us: contact information

Heterozygote Carrier Detection by Polymorphonuclear Leukocytes

Request for White Blood Cell Preparation Kit

Forms to Include with Samples


Reports of values for mixed leukocytes, polymorphonuclear leukocytes or placenta cystine will be available in two weeks or less from receipt. Cultures may take an additional week depending on the density and vigor of cells received.

Samples from outside the United States

Contact the Cystine Determination Lab by fax to request information (fax: 01-619-471-0427). Response will be by fax if possible. In general, all costs must be prepaid including shipping. A customs letter ruling on the entry of human blood derivatives is available.

Cystinosis Central Cystine Determination Lab