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Department of Health Services

Public Health Regional Laboratory

Rickettsia rickettsii Immunofluorescent Assay (IFA)

Intended for the detection and semi-quantitation of human IgG class antibodies to Spotted Fever and Typhus Fever Group rickettsia, as an in vitro aid in the diagnosis of diseases caused by these organisms.

Portal Ordering Code

RR IFA

CPT Code(s)

86757

Fee Schedule

Storage and Transport Criteria
Specimen Storage Specimen Transport
Acceptable Specimens
Minimum Volume
Frozen Range
-70°C - 0°C
Refrigerated Range
0.1°C - 8°C
Room Temperature Range
8.1°C - 30°C
Stability at
4°C - 25°C
Serum 1 mL Acceptable Acceptable Acceptable 8 hours
Includes

Positives titered to end point

Methodology

IFA

Assay Category

FDA Approved

Reference Range

See laboratory report

Alternative Names

Rocky Mountain Spotted Fever

Preferred Specimen(s)

Serum

Alternative Specimen(s)

N/A

Minimum Volume

1 mL

Special Instructions

1 mL of serum is sufficient volume to perform all tick-borne disease serology assays. Submission of multiple tubes of serum in not necessary.

Reject Criteria
  • Inadequately labeled specimens
  • Leaking specimens
  • QNS (quantities not sufficient)
  • Specimens not meeting the Storage & Transport criteria upon receipt at laboratory
Setup Schedule

Testing done once a week.

Turn around time (TAT)

7 business days from arrival at the lab