Jaundice Newborn Diagnosis and Evaluation

From bilirubin testing to clinical exams, Liv Hospital offers advanced diagnostics for safe and timely jaundice evaluation.

How Is Newborn Jaundice Evaluated and Monitored at Liv Hospital?

The diagnostic process for jaundice in newborns is a critical safety net in neonatal care. Because bilirubin levels can change rapidly in the first 100 hours of life, the evaluation must be both precise and frequent. The goal of diagnosis is threefold: to determine the exact concentration of bilirubin in the blood, to track the rate at which that level is rising, and to identify the underlying cause of the jaundice.

At Liv Hospital, every newborn undergoes a standardized bilirubin screening protocol before discharge. We utilize a combination of clinical visual assessments, non-invasive technology, and precise laboratory analysis to ensure that no baby is at risk for complications. 

Visual Clinical Assessment (The Kramer Scale)

Before any machines are used, clinicians perform a visual check. Jaundice usually progresses from the head downward. Doctors use the Kramer Scale to estimate the bilirubin level based on how far down the body the yellowing has reached.
While helpful, visual assessment alone is not sufficient for a definitive diagnosis, especially in infants with darker skin tones or those under artificial lights.

Transcutaneous Bilirubinometry (TcB)

This is a modern, non-invasive screening tool. A device called a bilimeter is placed gently against the baby’s forehead or chest. It uses light waves to measure the intensity of the yellow pigment in the skin tissue.

• The Benefit: It provides an instant reading and reduces the need for painful needle sticks (heel pricks). If the TcB reading is high, a formal blood test is then ordered.

Total Serum Bilirubin (TSB) Test

The TSB is the "gold standard" for diagnosis. A small amount of blood is taken via a heel prick to measure the exact amount of bilirubin in the plasma.

• Direct vs. Indirect: The lab measures "Unconjugated" (indirect) bilirubin, which is the type that can be toxic to the brain, and "Conjugated" (direct) bilirubin, which can indicate liver or gallbladder issues if elevated.

The Nomogram Analysis (Hour-Specific Risk)

A bilirubin level of 10 mg/dL might be normal for a 3-day-old baby but dangerously high for a 12-hour-old baby.

• The Tool: Doctors plot the TSB result on a Bhutani Nomogram, which accounts for the baby’s age in exact hours. This determines whether the baby is in a "low-risk," "intermediate-risk," or "high-risk" category.

Blood Type and Rh Factor Screening

If a baby develops jaundice within the first 24 hours, doctors immediately check the blood types of both mother and baby.

• The Conflict: If the mother is Type O and the baby is Type A or B, or if the mother is Rh-negative and the baby is Rh-positive, the mother’s antibodies may be attacking the baby’s red blood cells, causing "hemolytic disease."

Direct Antiglobulin Test (Coombs Test)

This specific blood test checks if the baby’s red blood cells have been coated with maternal antibodies.
A "Positive Coombs" test indicates that the red blood cells are being targeted for destruction, which explains a rapid rise in bilirubin.

Complete Blood Count (CBC) and Reticulocyte Count

• CBC: Used to check for anemia (low red blood cells) or signs of infection (abnormal white blood cell count).
• Reticulocyte Count: This measures how fast the baby is making new red blood cells. A high count suggests the body is trying to replace cells that are being broken down too quickly.

Peripheral Blood Smear

• A laboratory technician looks at the baby’s blood cells under a microscope. This can identify abnormally shaped cells (like in Spherocytosis) that break down more easily than healthy cells, leading to Jaundice Newborn.

G6PD Enzyme Screening

• In some ethnic groups, a deficiency of the G6PD enzyme is common.
  This enzyme protects red blood cells; without it, the cells can rupture easily when the baby is stressed by certain triggers, leading to a sudden and severe spike in bilirubin.

Liver Function and Bile Duct Evaluation

• If the "Direct" (conjugated) bilirubin is high, the focus shifts to the liver and gallbladder.

  • Imaging: An ultrasound of the liver may be performed to check for a blockage in the bile ducts (Biliary Atresia).
  • Sepsis Workup: If the baby appears ill, blood and urine cultures are taken to rule out a systemic infection that could be affecting liver function.

How Does Liv Hospital Ensure Accurate Diagnosis of Newborn Jaundice?

• At Liv Hospital, diagnostic precision is central to neonatal safety. Our NICU and nursery use advanced transcutaneous bilirubinometers for non-invasive monitoring.
  When blood testing is needed, rapid laboratory results allow immediate treatment decisions.
  Following American Academy of Pediatrics guidelines, every newborn jaundice case is assessed with the highest clinical standards.