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Test Code U Sulfocysteine Urine Sulfocysteine Determination

Clinical System Name

Urine Sulfocysteine Determination


U Sulfocysteine


This test provides quantitative analysis of Sulfocysteine in Urine. This test is useful in the diagnosis of Sulfocysteinuria and Molybdenum Cofactor Deficiency.


Sample Requirements

Specimen: Urine

Container(s): Urine Container

Preferred Vol: 5.0 mL

Minimum Vol: 2.0 mL


Notes: Freeze the specimen immediately after collection at -80 C if possible. Do not add preservatives.


Processing Instructions

Reject due to:

Spin: N

Aliquot: N

Temp: -80 C

Storage location:  Aliquot a maximum of 10 mL urine into a Falcon tube. Place the aliquot in the CPA -70 freezer, Send Outs rack ASAP.


Off-site collection:


Specimen Type Temperature Time
Urine -80 C 1 w



N 19 d


Performing Laboratory

Baylor Miraca Genetics Laboratories
2450 Holcombe

Grand Blvd Receiving Dock

Houston, TX 77021-2024


Phone Number: (800) 411-GENE (4363)



Department: Send Outs

Phone Number: (206) 987-2563

Reference Range

Interpretive report is provided.


Method: Tandem Mass Spectroscopy

Analytical Volume:


CPT Codes

82570x1, 83789x1

Special Instructions

Links to:


Baylor Medical Genetics Lab


Send Out Instructions

Reference Test Name: Sulfocysteine Determination - Urine
Reference Test Number: 4225
Instructions: Send frozen overnight to Baylor via FedEx. Will accept Saturday deliveries.