Regarding Blood test specimen clot.

Hi, My daughter 10month old had UTI symptoms, so our Ped doc suggested to get Blood and Urine test done. We called the lab and asked for the sample collection from home. He took around 5min to get the blood drawn. After getting around 8ml he took off the needle and checked the blood and said " No sir this cant be taken as specimen, its getting clotted" we have to draw the blood again, we asked him to continue the test with the same blood and get the urine test done faster as we were depending much on urine report for the treatment. Then they did test on the clotted blood specimen , few report were normal and few were very erroneous. Like her CBC report came with illogical readings acc to our PED. My daughter is now fine and active after starting Antibiotics, her platelet came in very low like 20000. Does this happen with coagulated blood specimen ? Her CBC report was nullified and based on Bacteria present in Urine report her treatment was started.