Author: Lasha Orjonikidze - Gia, 11 has a blood lead level of 104 μg/dL (micrograms per deciliter), 20 times higher than the blood lead reference value for children – 5. Giorgi, 9, also has a blood lead level 12 times higher than average. Both of the children were tested by Limbach Laboratory – a leading diagnostics group in Europe. Children living in Poti, Javakhishvili, and Chavchavadze streets, have blood lead levels 2-6 times higher than usual.