Final answer:
The lab tests that apply to a skin infection include Gram stain, culture and sensitivity, and CBC. The Gram stain helps identify bacteria types, culture and sensitivity determine the specific bacteria and antibiotic treatment, while CBC indicates body-wide infection.
Step-by-step explanation:
The lab tests that would apply to a skin infection include:
- Gram stain: This test is used to differentiate between gram-positive and gram-negative bacteria by staining the cells in a sample. For skin infections, this test helps identify if the causative agent is bacteria and, if so, the type of bacteria present.
- Culture and sensitivity: This involves growing the bacteria from a sample in a lab to identify the specific type that's causing the infection. Sensitivity testing is then done to determine the best antibiotic for treatment, especially for resistant bacteria like methicillin-resistant Staphylococcus aureus (MRSA).
- Complete blood count (CBC): While not specific to skin infections, a CBC can indicate an infection in the body through elevated white blood cell counts.
The Blood glucose test is not specifically related to diagnosing skin infections and is therefore not typically part of the initial testing protocol unless there is a concern for underlying conditions such as diabetes that may affect wound healing.