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@clm
Evidence of autologous blood doping can be found and i suggest the passports would show clear indications of it.
From wiki;
Yet another detection strategy has been to regard any apparently unnatural population of RBCs as evidence of blood doping. RBC population in the blood is usually reported as hematocrit (HCT) or as the concentration of hemoglobin (Hb). HCT is the fraction of blood cells by volume that are RBCs. A normal HCT is 41-50% in adult men and 36-44% in adult women[2]. Hemoglobin (Hb) is the iron-containing protein that binds oxygen in RBCs. Normal Hb levels are 14-17 g/dL of blood in men and 12-15 g/dL in women. For most healthy persons the two measurements are in close agreement.
There are two ways in which HCT and Hb measurements can suggest that the blood sample has been taken from a doping athlete. The first is simply an unusually high value for both. The Union Cycliste Internationale (UCI), for example, imposes a 15-day suspension from racing on any male athlete found to have an HCT above 50% and hemoglobin concentration above 17 grams per deciliter (g/dL). A few athletes naturally have high RBC concentrations (polycythemia), which they must demonstrate through a series of consistently high hematocrit and hemoglobin results over an extended period of time.
A recent, more sophisticated method of analysis, which has not yet reached the level of an official standard, is to compare the numbers of mature and immature RBCs in an athlete's circulation. If a high number of mature RBCs is not accompanied by a high number of immature RBCs—called reticulocytes--it suggests that the mature RBCs were artificially introduced by transfusion. EPO use can also lead to a similar RBC profile because a preponderance of mature RBCs tends to suppress the formation of reticulocytes. A measure known as the "stimulation index" or "off-score" has been proposed based on an equation involving hemoglobin and reticulocyte concentrations. A normal score is 85-95 and scores over 133 are considered evidence of doping. (The stimulation index is defined as Hb (g/L) minus sixty times the square root of the percentage of RBCs identified as reticulocytes.)
These threshold levels, and their specific numeric values are sources of controversy. Establishment of incorrect threshold values is one way that false positive test results can be produced by a doping control program.