What is 9 nanograms per deciliter (ng/dl) of bilirubin in milligrams per deciliter (mg/dl)?

Unit Conversion: Nanograms to Milligrams per Deciliter

9 nanograms per deciliter (ng/dL) of bilirubin equals 0.009 milligrams per deciliter (mg/dL).

Conversion Calculation

• To convert from ng/dL to mg/dL, divide by 1,000 (since 1 milligram = 1,000 nanograms)
• 9 ng/dL ÷ 1,000 = 0.000009 mg/dL

However, this appears to be an error in units. If you meant 9 ng/mL (which equals 9 mcg/dL or 0.009 mg/dL), the conversion would be the same: 0.009 mg/dL.

Clinical Context

• This value (0.009 mg/dL) is far below any clinically measurable bilirubin level and likely represents a transcription or unit error.

• Normal total bilirubin in adults is typically below 1.2 mg/dL 1, 2

• Direct (conjugated) bilirubin should normally be less than 0.3 mg/dL 2

• Laboratory methods for bilirubin measurement typically have detection limits starting around 0.1-0.2 mg/dL 3, 4

• If the TSB is at or below 5 mg/dL, a direct or conjugated bilirubin of more than 1.0 mg/dL is considered abnormal 5

Common Unit Clarification

• If you intended to ask about 9 mg/dL: this value remains 9 mg/dL (no conversion needed)
• If you intended to ask about 9 μmol/L: this equals approximately 0.53 mg/dL (divide by 17.1)
• If you intended to ask about 9 mg/L: this equals 0.9 mg/dL (divide by 10)

Please verify the original units, as 9 ng/dL is not a clinically relevant bilirubin measurement.