| Venous blood lead level (BLL; mcg/dL) | Perform follow-up test(s) |
| <5 | None (no follow-up testing is indicated). |
| 5 to 14 | Within one month. Obtain a maternal BLL* or cord BLL at delivery. |
| 15 to 24 | Within one month and then every two to three months. Obtain a maternal BLL* or cord BLL at delivery. More frequent testing may be indicated based on risk factor history. |
| 25 to 44 | Within one to four weeks and then every month. Obtain a maternal BLL* or cord BLL at delivery. |
| ≥45 | Within 24 hours and then at frequent intervals depending on clinical interventions and trend in BLLs. Consultation with a clinician experienced in the management of pregnant women with BLLs in this range is strongly advised. Obtain a maternal BLL* or cord BLL at delivery. |
