Mo

No, you don’t need to fast for a QuantiFERON Gold test; eat and drink normally unless your order includes other labs that require fasting.

Most serology tests don’t need fasting, but some add-on labs may ask for 8–12 hours—follow the instructions on your lab order.

No, you don’t need to fast for an RPR blood test; eat normally unless your order includes fasting labs such as glucose or lipids.

No, a rheumatoid factor (RF) blood test doesn’t require fasting unless it’s paired with labs that do, like fasting glucose or a lipid panel.

No, a PTT blood test usually doesn’t need fasting, but follow the lab’s instructions and share all medicines you take.

No, a PT/INR test usually doesn’t need fasting; follow lab instructions if other tests are ordered too.

Most PSA blood tests don’t require fasting, yet fasting may be requested when other labs are drawn at the same time.

No, a prolactin blood test doesn’t require fasting, unless your clinician orders other labs that do.

No, most pregnancy blood tests don’t require fasting, but some add-on labs—like fasting glucose—do.

No, most NIPT blood tests don’t require fasting; eat normally unless your clinic pairs it with other fasting labs.