Test Overview
Test Methodology

Complement Fixation (CF)/Immunodiffusion

Test Usage

Aiding in the diagnosis of Histoplasma meningitis in spinal fluid specimens

Reference Range *

Negative

Test Limitations

Cross-reacting antibodies with coccidioidomycosis or blastomycosis may cause false-positive results for Histoplasmosis.

Test Details
Days Set Up
Monday - Friday
Analytic Time

3 - 9 days

Soft Order Code
CHISM
Laboratory
Sendout
Reference Laboratory
Mayo CHIST
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect CSF in a sterile tube. Seal tightly and parafilm to prevent leakage, or transfer to screw capped aliquot tube (preferred). Send to Specimen Processing refrigerated. For MLab client use only

Normal Volume
1 mL CSF
Minimum Volume
0.5 mL CSF
Storage Temperature
Refrigerated preferred, frozen acceptable
Additional Information

Test performed by Mayo Clinic Laboratories

Billing
CPT Code
86698 x 3
Fee Code
AA538 x3
NY State Approved
No