Final answer:
When a mother presents for L&D, all lab tests including blood type and crossmatch, hemoglobin and hematocrit, and platelet count should be performed to ensure maternal and fetal safety during childbirth.
Step-by-step explanation:
When a mother presents for labor and delivery (L&D), the recommended labs to be performed are d) All of the above, which includes a) Blood type and crossmatch, b) Hemoglobin and hematocrit, and c) Platelet count. These tests are crucial to ensure the safety and preparedness for potential complications such as hemorrhage or blood transfusion needs.
Blood type and crossmatch are necessary to identify the mother's blood type and Rh factor, and to have compatible blood available in case a transfusion is needed. If the mother is Rh-negative and the fetus is Rh-positive, it can lead to hemolytic disease of the newborn, which is a serious condition where the mother's immune system attacks the fetal red blood cells.
Hemoglobin and hematocrit levels are evaluated to determine if the mother has anemia and to ensure she can safely tolerate blood loss during childbirth. Platelet count is also essential to assess the mother's clotting ability, which is crucial to prevent excessive bleeding during and after delivery.