Cryptococcal Antigen
| Abbrev Code: | CRYPTAG | ||
| Order Code: | LAB1194 | Order Name: | Cryptococcal Antigen |
| Synonyms: | Cryptiter | ||
| Methodology: | Lateral flow | ||
| CPT Codes: | 87899 x1 | ||
| Test Includes: | Screen for Cryptococcal Antigen and titer if positive. | ||
| Turnaround Time: | Performed 24 hours/day. If positive, titer performed Mon-Fri, 0730-1500. | ||
| Special Instructions: | Cryptococcal antigen testing on CSF should be accompanied by a fungal culture. A fungal culture will be added to all CSF which test positive for Cryptococcal antigen and all non-Outreach CSF which test negative for Cryptococcal antigen if not already ordered. | ||
Collection Instructions
| Specimen: | CSF or blood |
| Optimal Volume: | 1 mL CSF, 4 mL blood |
| Minimum\Peds Volume: | 0.5 mL CSF, 1.2 mL blood |
| Container: | CSF Tubes, Red or gold (gel) Alternate Containers: See Collection Instructions, Red (gel) |
| Collection Instructions: | Collect blood in red or gold (gel) tube. Alternate containers: red (gel) tube; collect CSF in sterile container |
| Causes for Rejection: | Gross hemolysis; lipemia; turbidity. For optimal results, sterile non-hemolyzed serum should be used. |
Processing and Shipping
| Specimen Processing: | Blood: Centrifuge and aliquot 1.8 mL serum (0.5 mL minimum) and store at refrigerated temperature. CSF: Store in a sterile container at refrigerated temperature. |
| Shipping Instructions: | Ship to arrive within 72 hours of collection at refrigerated temperature. |
| Test Performed at or Referral Lab | Infectious Diseases Diagnostic Laboratory (UMMC East Bank) |
Interpretive
| Critical Range: | Positive |
| Reference Range: | Negative |
| Use: | Establish the presence of Cryptococcus neoformans antigen. |
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