Use warm compresses if blood collects under the puncture site or if the area becomes tender, red or painful. Time before test results available Test requires only a few minutes in the laboratory. Time before results are reported to the doctor or patient varies from a few Test results Test Values Test results are determined by quantitative chemical analysis. Factors Affecting Results Taking these drugs may affect test results None expected. Other factors that may affect test results Recent surgery.
Prosthetic heart valves.
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