Final answer:
The provider is likely to prescribe a Kleihauer-Betke test to detect fetal blood cells in the mother's bloodstream, which is indicative of a placental abruption and helps in managing the pregnancy.
Step-by-step explanation:
A nurse caring for a client who is at 24 weeks gestation and has a suspected placental abruption should expect the provider to prescribe a Kleihauer-Betke test. This test is used to detect fetal blood cells that are present in the mother's bloodstream, which can be indicative of a placental abruption. Placental abruption is a condition where the placenta detaches from the uterine wall before delivery, which can lead to serious complications for both mother and fetus. This test is important because it helps in assessing the extent of the abruption and guiding the management of the pregnancy.