Diagnostic Tests for Blue Fingernails
Certain diagnostic tests for blue fingernails include:
– Echocardiogram: This test can be done to examine heart functioning and look for structural problems. It takes pictures of the heart with the help of sound waves.
– X-rays and CT scans: These are popular imaging methods used for examine heart and lung issues, as well as peripheral cyanosis.
– Arterial blood gas analysis: This is a blood test that measures the levels of carbon dioxide and oxygen in the blood. It also shows the acidity and hemoglobin level in the blood. The test can be used for diagnosing peripheral and central cyanosis.
– Pulse oximetry: This is a noninvasive procedure that involves the use of a sensor or probe to measure the oxygen level in the blood. It may help diagnose peripheral and central cyanosis, as well as identify structural problems in the heart that would suggest differential cyanosis.
Based on the results, your doctor may perform further tests to confirm the diagnosis. [9]
