What occurs if an orange shield tube is collected before a lavender shield tube?

If an orange shield tube is collected before a lavender shield tube, there may be a risk of contamination or interference in the lavender tube's sample. The orange tube typically contains a serum separator gel and may affect the plasma or whole blood samples collected in the lavender tube, which is intended for tests that require EDTA as an anticoagulant. It's best practice to follow the correct order of draw to prevent such issues.