Home
HelpTest Code LFACX Cryptococcus Antigen with Reflex, Spinal Fluid
Reporting Name
Cryptococcus Ag w/Reflex, LFA, CSFUseful For
Aiding in the diagnosis of cryptococcosis
This test should not be used as a test of cure or to guide treatment decisions.
This test should not be performed as a screening procedure for the general population.
Testing Algorithm
If result is positive, Cryptococcus antigen titer will be performed at an additional charge.
If Cryptococcus antigen titer is positive, then fungal culture will be performed at an additional charge.
Method Name
Lateral Flow Assay (LFA)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
CSFSpecimen Required
Container/Tube: Sterile vial
Specimen Volume: 1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| CSF | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days |
Reject Due To
| Gross hemolysis | Reject |
Reference Values
CRYPTOCOCCUS ANTIGEN SCREEN WITH TITER
Negative
Reference values apply to all ages.
CRYPTOCOCCUS ANTIGEN TITER, LFA
Negative
Reference values apply to all ages.
FUNGAL CULTURE
Negative
If positive, fungus will be identified.
Reference values apply to all ages.
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 to 35 daysCPT Code Information
87899-Cryptococcus Ag Screen w/Titer, CSF
87899-Cryptococcus Ag Titer, LFA, CSF (as appropriate)
87102-Fungal Culture, CSF (as appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| LFACX | Cryptococcus Ag w/Reflex, LFA, CSF | 29896-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 62074 | Cryptococcus Ag Screen w/Titer, CSF | 29896-8 |
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| CLFA | Cryptococcus Ag Screen w/Titer, CSF | Yes | Yes |
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| CLFAT | Cryptococcus Ag Titer, LFA, CSF | Yes | No |
| FGENC | Fungal Culture, CSF | Yes, (Order FGEN) | No |
Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.