Test Overview
Reference Range *

<0.2 nmol half cystine/ mg protein

Test Limitations

Specimen MUST be received by lab within 1 day of collection.

Test Details
Days Set Up
Monday - Friday
Analytic Time

5 days

Soft Order Code
CYSTG
Laboratory
Sendout
Reference Laboratory
University of California San Diego
Section
Special Testing
Specimen Requirements
Collection

Collect Mon - Thurs before 4pm. If drawn at an offsite lab, please call sendouts to confirm it will make it here before our Fed Ex pick up. It MUST be in Specimen processing by 500pm to make the pick up. It may require calling a stat courier, but ONLY if it can be transported here by 5 pm.

Collection Instructions

Collect specimen in ACD solution A tube. Refrigerate within an hour of collection. Send to Specimen Processing refrigerated. Draw Mon- Thurs only before 4 pm
If drawn at an offsite lab, please call sendouts to confirm it will make it here before our Fed Ex pick up. It MUST be in Specimen processing by 500pm to make the pick up. It may require calling a stat courier, but ONLY if it can be transported here by 5 pm.

Special Handling

Must be received by UCSD the day after collection. If drawn at an offsite lab, please call sendouts to confirm it will make it here before our Fed Ex pick up. It MUST be in Specimen processing by 500pm to make the pick up. It may require calling a stat courier, but ONLY if it can be transported here by 5 pm.

Rejection Criteria
Specimen will be around > 24 hours old when received by UCSF. The day following collection is acceptable.
ACD Solution A
Normal Volume
5 mL Whole blood
Minimum Volume
2 mL whole blood
Storage Temperature
Refrigerated only
Additional Information

Test performed by: UCSD Cystine Detemination Unit Biochemical Genetics Laboratory

Billing
CPT Code
83789
Fee Code
AA352
NY State Approved
No