Final answer:
A client with Systemic Lupus Erythematosus is likely to show an increased Erythrocyte Sedimentation Rate on a blood test since SLE causes inflammation in the body.
Step-by-step explanation:
The blood test results indicative for a client diagnosed with Systemic Lupus Erythematosus (SLE) would most likely reveal an Increased Erythrocyte Sedimentation Rate (ESR). SLE is an autoimmune disorder where the immune system attacks the body's cells and tissues, leading to inflammation, which can cause the ESR to increase. An increased ESR is not specific to SLE but indicates the presence of inflammation or other conditions affecting the patient.