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This Cystatin C converter changes a Cystatin C concentration between mg/L, mg/dL, mg/100mL, mg%, µg/mL, µg/L, ng/mL, and g/L. It is designed for serum or plasma Cystatin C unit conversion and does not calculate estimated glomerular filtration rate.

Satuan yang didukung

mg/L · standard clinical reporting unit for serum or plasma Cystatin C mg/dL · milligrams per decilitre; multiply by 10 to obtain mg/L mg/100mL · numerically equivalent to mg/dL mg% · historical notation numerically equivalent to mg/dL µg/mL · numerically equivalent to mg/L; also written as mcg/mL or ug/mL µg/L · micrograms per litre ng/mL · numerically equivalent to µg/L g/L · grams per litre; rarely used for clinical Cystatin C reporting

Rumus konversi

Cystatin C mg/L = mg/dL × 10

Cystatin C mg/dL = mg/L ÷ 10

mg/100mL = mg/dL

mg% = mg/dL

Cystatin C µg/mL = mg/L

Cystatin C µg/L = mg/L × 1000

Cystatin C ng/mL = mg/L × 1000

Cystatin C g/L = mg/L ÷ 1000

µg/L = ng/mL

Contoh konversi

Example: a Cystatin C result of 0.9 mg/L is equivalent to 0.09 mg/dL, 0.9 µg/mL, 900 µg/L, 900 ng/mL, and 0.0009 g/L.

Catatan laboratorium penting

This tool converts concentration units only. It does not determine whether a Cystatin C result is normal, calculate eGFR, diagnose kidney disease, or replace the reference interval and interpretation supplied by the performing laboratory.

How to Convert Cystatin C from mg/L to mg/dL

To convert Cystatin C from mg/L to mg/dL, divide the mg/L result by 10. The conversion changes only the concentration unit and does not alter the underlying laboratory result.

For example, a serum Cystatin C concentration of 0.9 mg/L is equal to 0.09 mg/dL.

Cystatin C mg/dL = Cystatin C mg/L ÷ 10
0.8 mg/L = 0.08 mg/dL
0.9 mg/L = 0.09 mg/dL
1.0 mg/L = 0.10 mg/dL
1.2 mg/L = 0.12 mg/dL
2.0 mg/L = 0.20 mg/dL

How to Convert Cystatin C from mg/dL to mg/L

To convert Cystatin C from mg/dL to mg/L, multiply the mg/dL result by 10.

The unit printed on the original laboratory report should always be checked because Cystatin C is most commonly reported in mg/L, whereas creatinine is frequently reported in mg/dL.

Cystatin C mg/L = Cystatin C mg/dL × 10
0.05 mg/dL = 0.5 mg/L
0.08 mg/dL = 0.8 mg/L
0.10 mg/dL = 1.0 mg/L
0.15 mg/dL = 1.5 mg/L
0.20 mg/dL = 2.0 mg/L

Equivalent Cystatin C Reporting Units

Some Cystatin C units use different prefixes or volume expressions while representing the same numerical concentration. The converter handles these equivalent forms automatically.

1 mg/L is numerically equal to 1 µg/mL.
1 µg/L is numerically equal to 1 ng/mL.
1 mg/L equals 1000 µg/L.
1 mg/L equals 1000 ng/mL.
1 mg/dL equals 1 mg/100mL.
1 mg/dL is numerically equal to 1 mg%.
1 g/L equals 1000 mg/L.

Why Cystatin C Is Usually Reported in mg/L

Clinical laboratories generally report serum or plasma Cystatin C as a mass concentration in mg/L. Standard Cystatin C-based kidney function equations also expect the serum Cystatin C input in mg/L.

A value copied from a report in mg/dL or another unit should therefore be converted to mg/L before it is entered into an eGFR equation that specifically requires standardized serum Cystatin C in mg/L.

Do not enter a Cystatin C value reported in mg/dL into an equation expecting mg/L without converting it first.
Do not use a creatinine conversion factor for Cystatin C.
Confirm that the analyte is Cystatin C rather than creatinine, beta-2 microglobulin, or another filtration marker.
Confirm whether the specimen is serum, plasma, urine, or another body fluid.

Cystatin C Converter versus Cystatin C eGFR Calculator

A Cystatin C unit converter and a Cystatin C eGFR calculator perform different tasks. This converter expresses the same measured Cystatin C concentration in another unit.

An eGFR calculator applies a validated equation using standardized serum Cystatin C and, depending on the equation, age, sex, and serum creatinine. Converting Cystatin C units alone does not produce an eGFR result.

Unit conversion output is a Cystatin C concentration.
Cystatin C-based eGFR output is expressed in mL/min/1.73 m².
The 2021 combined CKD-EPI equation uses both creatinine and Cystatin C.
The correct equation depends on patient age and the intended clinical use.
Standardized laboratory measurements should be used when required by the selected equation.

Cystatin C, Creatinine, and Kidney Function

Cystatin C is a low-molecular-weight protein produced by nucleated cells and filtered by the kidneys. Its serum concentration is used as a filtration marker and may complement serum creatinine when kidney function is being assessed.

Cystatin C is generally less dependent on muscle mass than creatinine, but it is not free from non-kidney influences. A result must be interpreted within the complete clinical and laboratory context.

Cystatin C concentration and creatinine concentration use different reporting conventions and conversion factors.
A converted Cystatin C value remains the same laboratory measurement.
A high or low converted number should not be interpreted without the laboratory reference interval.
Kidney evaluation may also include creatinine-based eGFR, combined creatinine–Cystatin C eGFR, and urine albumin assessment.

Assay Standardization and Important Limitations

Cystatin C results may differ between analytical methods, assay platforms, calibration systems, and laboratories. Clinical equations that require standardized serum Cystatin C should only be used when the measurement is appropriate for that equation.

Factors unrelated to glomerular filtration may also affect Cystatin C concentration. These may include corticosteroid exposure, thyroid dysfunction, inflammation, smoking, body composition, and other clinical conditions.

Use the unit and analyte name printed on the original report.
Use the performing laboratory’s own reference interval.
Do not compare results from different assay platforms without considering method differences.
Do not convert a concentration and then assume that it belongs within another laboratory’s reference interval.
Do not use this converter alone to diagnose acute kidney injury or chronic kidney disease.
Do not make medication or treatment decisions from the converted value alone.

Common Cystatin C Conversion Examples

The following examples show the same Cystatin C concentrations expressed in several supported units.

0.6 mg/L = 0.06 mg/dL = 0.6 µg/mL = 600 ng/mL
0.8 mg/L = 0.08 mg/dL = 0.8 µg/mL = 800 ng/mL
1.0 mg/L = 0.10 mg/dL = 1.0 µg/mL = 1000 ng/mL
1.5 mg/L = 0.15 mg/dL = 1.5 µg/mL = 1500 ng/mL
2.0 mg/L = 0.20 mg/dL = 2.0 µg/mL = 2000 ng/mL
1000 µg/L = 1.0 mg/L = 0.10 mg/dL
0.001 g/L = 1.0 mg/L

Frequently Asked Questions

How do I convert Cystatin C mg/L to mg/dL? Divide the value in mg/L by 10.

How do I convert Cystatin C mg/dL to mg/L? Multiply the value in mg/dL by 10.

Is Cystatin C mg/L the same as µg/mL? Yes. They are numerically equivalent concentration units.

Is Cystatin C µg/L the same as ng/mL? Yes. They have the same numerical value.

What unit is commonly used for serum Cystatin C? Clinical laboratories and Cystatin C-based eGFR equations commonly use mg/L.

Does this Cystatin C calculator estimate eGFR? No. It converts Cystatin C concentration units only.

Can I use a creatinine conversion formula for Cystatin C? No. Creatinine and Cystatin C are different analytes and must not share analyte-specific conversion factors.

Can the converter determine whether Cystatin C is elevated? No. Interpretation requires the performing laboratory’s reference interval and the patient’s clinical context.

Cystatin C Unit Converter

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