Cryptococcal Antigen Titer

Orderable EAP code:

LAB100429 (CSF), LAB100340 (Serum)

Billable EAP Codes:

80001903 x 1

CPT Codes:

86406 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 4 Hours
Urgent: 2 Hours

Test Schedule:

Test available Monday through Friday, 7 am to 3:30 pm.

Units:

Titer

Specimen Requirements:

0.5 mL CSF or 1 mL blood, RED top tube.

Pediatric Specimen Requirements:

0.5 mL in a 4 mL RED top tube or 0.5 mL CSF

Comments:

This test is run on specimens positive for the cryptococcus screening test. A CSF titer of greater than 1:8 in patients with meningitis strongly suggests infection with Cryptococcus neoformans. Titers of 1:4 or less are presumptive and additional serologic follow up is strongly recommended. A negative test does not rule out Cryptococcal meningitis. A culture should be performed to confirm the diagnosis regardless of titer.

Synonyms:

Cryptococcal Antigen, Quantitative, CCA for Serum, CCT for CTT

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