Final answer:
Lab features of Systemic Lupus Erythematosus (SLE) include the presence of ANAs, circulating anticoagulant and immune complexes, and decreased levels of complement.
Step-by-step explanation:
The lab features of Systemic Lupus Erythematosus (SLE) include:
- The presence of ANAs: Over 95% of patients with SLE have anti-nuclear antibodies (ANAs), which are autoantibodies directed against nuclear and cytoplasmic proteins.
- Circulating anticoagulant and immune complexes: SLE can lead to the accumulation of immune complexes, which can cause tissue damage. Additionally, circulating anticoagulant can cause abnormal blood clotting in individuals with SLE.
- Decreased levels of complement: Complement levels, which are involved in the immune response, can be reduced in patients with SLE.
Therefore, the answer to the question is D. All of the above.