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The University of Chicago Medicine Laboratories

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Specimen Collection and Handling

Transfusion

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Mayo Clinic Laboratories

Test Code FACEC Angiotensin Converting Enzyme, CSF

Important Note

Use Sunquest code " ACES"

Synonym "ACES"

 

Specimen Type

CSF


Specimen Required


Specimen Type: Spinal Fluid

Sources: CSF

Container/Tube: Sterile container

Specimen Volume: 1 mL

Collection Instructions:  Collect 1 mL of spinal fluid (CSF). Ship frozen.

 

Note: Gadolinium contrast agents have been reported to inhibit ACE activity. Therefore, CSF containing gadolinium-based contrast agents should not be submitted to the laboratory for evaluation.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
CSF Frozen (preferred) 180 days
  Refrigerated  7 days

Reject Due To

Hemolysis: Mild Reject; Gross Reject
Thawing: Cold OK; Warm reject
Lipemia: NA
Icterus: NA
Other: Xanthochromic samples (yellow colour), CSF containing gadolinium-based contrast agents

Reference Values

0.0-2.5 U/L

Day(s) Performed

Monday, Wednesday, Friday

Report Available

1 to 7 days

Performing Laboratory

ARUP Laboratories

CPT Code Information

82164

Method Name

Quantitative Spectrophotometry

Secondary ID

57824