Histone Antibodies

Test Code

LAB5210297

Quest Code

37056

CPT Codes
83516

Preferred Specimen

1 mL serum

Patient Preparation
Overnight fasting preferred

Minimum Volume

0.3 mL

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 24 hours
Refrigerated: 14 days
Frozen: 30 days

Methodology
Enzyme Immunoassay (EIA)

Setup Schedule

A.M. Sets up 3 days a week.

Report Available

Reports in 2 to 5 days.

Reference Range

Value	Explanation of Results
<1.0	Negative
1.0-1.5	Weak Positive
1.6-2.5	Moderate Positive
>2.5	Strong Positive

Clinical Significance

Histone antibody is present in 80-95% of patients with drug-induced Systemic Lupus Erythematosus (SLE), 20-50% of patients with idiopathic SLE, and infrequently in patients with other autoimmune connective tissue diseases.

Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.