Casandra
Casandra Test Code LC45236Version 1 (DRAFT)
Performing Lab
Lab LabcorpLab Test ID 070282
Testosterone, Free and Weakly Bound, With Total Testosterone, LC/MS-MS
Also known as: Central Nervous System IgG Synthesis, Cerebrospinal Fluid IgG Synthesis, CNS IgG Synthesis, CSF IgG Synthesis, IgG Synthesis Rate
Clinical Use
Order TestUse
Evaluate the de novo rate of synthesis of IgG in CNS; diagnose inflammatory and autoimmune diseases involving CNS, in particular, multiple sclerosis; determine if IgG synthesis rate is based on the quotient of average normal serum IgG/average normal CSF IgG
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
CSF IgG, CSF albumin, and serum IgG: immunologic; serum albumin: spectrophotometry; synthesis rate by calculation
Biomarkers
Targets not provided.
LOINC Codes
Order Codes
- 58716-2 - Testost free+WB + Total pnl SerPl
Result Codes
- 2464-6 - IgG CSF-mCnc
- 1746-7 - Albumin CSF-mCnc
- 1751-7 - Albumin SerPl-mCnc
- 2465-3 - IgG SerPl-mCnc
- 14116-8 - IgG Synth Rate Ser+CSF Calc-mRate
- 2986-8 - Testost SerPl-mCnc
- 6891-6 - Testosterone.free+WB MFr SerPl
- 2990-0 - Testosterone.free+WB SerPl-mCnc
Result Turnaround Time
3-6 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Unknown
Volume
Not provided
Minimum Volume
Not provided
Causes for Rejection
Blood in CSF; failure to obtain blood and CSF specimens
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